OK, it's one of these threads again, oh well, let's do it...
I agree with the OP, Maps needs improvements, lots of improvements, Apple is the only one without a first party navigation solution. Not only Maps though, but all iOS apps need an update and improvement.
Live icons - Icons that change according to an event, for example a weather app could show the temperature in it's icon.
Widgets - In the notification centre
Multitasking gestures like in Zephyr(Cydia tweak) - Swipe from bottom up from the bottom and hold for Switcher, swipe up/flick up from the bottom to go back to the Homescreen. The Switcher itself should also be doubled in size IMO and audio controls should be placed above the app icons.
Integrate Spotlight search into notification center - put it on top(above stocks/weather), The search should be instantly accessible from anywhere with minimal taps/swipes.
SBSettings(Quick switches) widget in Notification Center - Wifi, bluetooth, airplane, cellular data, 3G, brightness
Hide or uninstall default iOS apps, I don't need Newsstand
App cross-communication and integration
Integrated full Bluetooth support, sending files, contacts, syncing, etc...
Wi-Fi Direct support/Airdrop, sending files, contacts, syncing, etc...
Increase folder size, allow for multiple pages in folders - InfiniFolders
Camera app needs Timer, time/date/location tagging, 720p @ 60FPS recording option, White balance, Exposure, Light sensitivity(ISO), Contrast
Sharpness, all of these should be added.
Birthday's in Calendar - Right now iOS reads your contacts and displays birthdays of your contacts in the Calendar, but I want it to show the actual age the person is turning in the brackets too... example: John Smith [35].
Ability delete photos from Photo Library
Ability to view the image file information, EXIF(date of taking, size, etc)
Calendar - upcoming event badges on calendar(with an ability to adjust how far in advance you can see your events, 24hours, 7 days, 14 days, etc..)
I know badges are used for invitations right now, but how often do you get those?
Calendar events in Notification Center/Lockscreen - Configure look at head, it only shows events for the next 24 hours, what if I want to show events for the next 72 hours?
iMessage - Needs an ability to share location(Map) like with WhatsApp, right from the iMessage. Current you can only send photos from iMessage, but Maps and Contacts shortcuts should be added too. Also it would be great if the image EXIF data was preserved when sent so the receiver could "open" that image in Maps and navigate... quickly snap a picture of a location, send it, the receiver gets the image, taps "Open in Maps" and finds the route to you.
Prevent shut down when the phone is locked.
Delivery notification for normal SMS messages.
Snooze time configuration option for alarm, (amount of snoozes, time in between).
More "Pull down to refresh/do something" mechanics throughout the system.
Private browsing switch IN the Safari, so you can switch it on/off while you're in Safari, not having to go into Settings.
Swiping to get rid of notification banners - swipe them left or right.
Swipe up for the multitasking bar, Volume control and music controls should be available right there, on top of each other so you don't have to swipe to the left for them.
GridTab view for Safari.
YouTube continuous playlist play.
Maps - When you are picking a bookmark or a contact in Maps there is this text in the title taking up space "Choose a bookmark/contact to view on the map" Remove that, most people already know how to use it.
iTunes
Drag and drop(manually manage) pictures without the need to sync. I don't want to have a folder specifically for the iPhone, I want to simply grab a picture and drag it into the iPhone.