changes i would love to see
improved multitasking interface (what you see when you double click the home button) - consolidate the music/rotation lock controls into the first screen so you don't have to swipe the dock to access them, add basic widget support (basically turn it into a mini dashboard), show which apps are currently running in the background as opposed to any that you've opened ever, "flick" the apps out of it to close them instead of holding down and pressing the little (-) like you do to remove programs from the OS X dock
turn by turn directions
improved youtube player, ability to select between SD/HD
ability to remove individual items from notification center
ability to share pictures when you open camera roll from the lock-screen shortcut (unless your phone is passlocked)
weather icon shows actual weather (doesn't have to be a fancy shmancy widget, but at least change that "73"...i mean they do it for the calendar app already...)
*improved group messaging system - the functionality changes based on if certain people have group messaging turned on and if certain people have iphones/non iphones. ex. sometimes your group messaging is turned off but your message is sent to everyone if someone else's is turned off. and many different permutations of these scenarios
ability to cancel sending texts if you're fast enough
ability to see chat history by pulling the keyboard down in Messages when your message is longer than the screen...currently you can only do it when there's extra space above it and you push it
improved front facing camera for facetime (improved back would be nice too, but the 4s camera is already really nice)
apps automatically clear their cached data when you close them. ex. sometimes facebook balloons up to 200mb even though it's not "storing" any data, and you can only recover space by deleting + reinstalling the app
smaller margins for ibooks (applies more for ipad i guess) - we already have a bezel to put our thumbs like in a real book, why do we need to waste another inch on each side for margins?
smarter imessages - sometimes when you message the same person from your phone and then ipad, it results in 2 threads for them even though they have your email + phone number in the same contact. it should all be consolidated for the same person, regardless of where you send from
fix clock bug where it sometimes goes off but no sound (if you look at the screen though, it shows that it's "ringing")
a case redesign isn't necessary but would help keep the brand looking fresh
ability to edit song data directly through ios - changing artist names, etc.
when making a new playlist, show the alphabet shortcuts on the right side! it's so annoying having to scroll all the way down to Z
*ability to check your phone app when you're on a call. ex. look at recent calls, voicemail. Obviously you won't be able to "use" them but sometimes you need to tell someone when Bob Smith called you last. And you can't - you can access every other app except the phone app (it just brings up your current call screen)
photostream syncs videos too (maybe only over wifi or something?). it would be amazing never having to rely on a wired connection to upload everything to your computer. in that case might also have to change the name "photostream" =)
add minimal non-cloud siri commands. like "play ____" or "call ____" so you can do basic things without relying on network connection (if you have bad service, or if the siri server is being wonky, or you've already reached your data cap)
*ability to use your own music + playlists as alarms
*ability to airplay to multiple devices (audio, not video)! would probably take more processing power and battery, but it would make airplay so much more comprehensive
improved brightness sensor + control interface...does it even make sense? how can you change your brightness but also have it be automatically adjusting? maybe let you choose the range of brightness that it will automatically set between
mail search - search through content as well as subject line
ability to select certain parts of a text message as opposed to all or nothing. especially helpful when trying to copy addresses
~facetime - allow streaming over 4g (/3g?). not POSITIVE about this one since it would be so easy to go over data limits, but i think they should at least let you do it if you want. and skype has the ability to do it. and i realize that it's mostly the carrier's decisions, so maybe it's not fair to bring it up
*release the facetime standard! i hate having to rely on skype when videochatting with non-ios/osx friends
allow facetime screen sharing. may be more applicable for OS X, but skype has it and this would help facetime be more ubiquitous and versatile. not useful in most situations, but can be a lifesaver in some.
very basic file system that apps can pull from. if they want tablets to replace computers in the future, this is a necessity.
sync app progress (particularly in games) through icloud. it seems like the only way to do this is to restore one of your devices to the other device's data. and it only works for the first time
updating an app automatically updates the corresponding app on your other ios device. if they can do this for downloading new apps, why can't they do it for the app updates?
improved multitasking interface (what you see when you double click the home button) - consolidate the music/rotation lock controls into the first screen so you don't have to swipe the dock to access them, add basic widget support (basically turn it into a mini dashboard), show which apps are currently running in the background as opposed to any that you've opened ever, "flick" the apps out of it to close them instead of holding down and pressing the little (-) like you do to remove programs from the OS X dock
turn by turn directions
improved youtube player, ability to select between SD/HD
ability to remove individual items from notification center
ability to share pictures when you open camera roll from the lock-screen shortcut (unless your phone is passlocked)
weather icon shows actual weather (doesn't have to be a fancy shmancy widget, but at least change that "73"...i mean they do it for the calendar app already...)
*improved group messaging system - the functionality changes based on if certain people have group messaging turned on and if certain people have iphones/non iphones. ex. sometimes your group messaging is turned off but your message is sent to everyone if someone else's is turned off. and many different permutations of these scenarios
ability to cancel sending texts if you're fast enough
ability to see chat history by pulling the keyboard down in Messages when your message is longer than the screen...currently you can only do it when there's extra space above it and you push it
improved front facing camera for facetime (improved back would be nice too, but the 4s camera is already really nice)
apps automatically clear their cached data when you close them. ex. sometimes facebook balloons up to 200mb even though it's not "storing" any data, and you can only recover space by deleting + reinstalling the app
smaller margins for ibooks (applies more for ipad i guess) - we already have a bezel to put our thumbs like in a real book, why do we need to waste another inch on each side for margins?
smarter imessages - sometimes when you message the same person from your phone and then ipad, it results in 2 threads for them even though they have your email + phone number in the same contact. it should all be consolidated for the same person, regardless of where you send from
fix clock bug where it sometimes goes off but no sound (if you look at the screen though, it shows that it's "ringing")
a case redesign isn't necessary but would help keep the brand looking fresh
ability to edit song data directly through ios - changing artist names, etc.
when making a new playlist, show the alphabet shortcuts on the right side! it's so annoying having to scroll all the way down to Z
*ability to check your phone app when you're on a call. ex. look at recent calls, voicemail. Obviously you won't be able to "use" them but sometimes you need to tell someone when Bob Smith called you last. And you can't - you can access every other app except the phone app (it just brings up your current call screen)
photostream syncs videos too (maybe only over wifi or something?). it would be amazing never having to rely on a wired connection to upload everything to your computer. in that case might also have to change the name "photostream" =)
add minimal non-cloud siri commands. like "play ____" or "call ____" so you can do basic things without relying on network connection (if you have bad service, or if the siri server is being wonky, or you've already reached your data cap)
*ability to use your own music + playlists as alarms
*ability to airplay to multiple devices (audio, not video)! would probably take more processing power and battery, but it would make airplay so much more comprehensive
improved brightness sensor + control interface...does it even make sense? how can you change your brightness but also have it be automatically adjusting? maybe let you choose the range of brightness that it will automatically set between
mail search - search through content as well as subject line
ability to select certain parts of a text message as opposed to all or nothing. especially helpful when trying to copy addresses
~facetime - allow streaming over 4g (/3g?). not POSITIVE about this one since it would be so easy to go over data limits, but i think they should at least let you do it if you want. and skype has the ability to do it. and i realize that it's mostly the carrier's decisions, so maybe it's not fair to bring it up
*release the facetime standard! i hate having to rely on skype when videochatting with non-ios/osx friends
allow facetime screen sharing. may be more applicable for OS X, but skype has it and this would help facetime be more ubiquitous and versatile. not useful in most situations, but can be a lifesaver in some.
very basic file system that apps can pull from. if they want tablets to replace computers in the future, this is a necessity.
sync app progress (particularly in games) through icloud. it seems like the only way to do this is to restore one of your devices to the other device's data. and it only works for the first time
updating an app automatically updates the corresponding app on your other ios device. if they can do this for downloading new apps, why can't they do it for the app updates?