Live icons
Widgets in the Notification Center
Data usage monitor
Full Bluetooth support, sending files, contacts, syncing, connecting to external GPS, etc...
Wi-Fi Direct support/Airdrop
Integrate Spotlight search into notification center - put it on top(above stocks)
Multitasking gestures - Zephyr - Flick up for the Springboard, Swipe up and hold for the Switcher
SBSettings(Quick switches) in Notification Center - Wifi, bluetooth, airplane, cellular data, 3G, brightness
Camera app needs Timer, time/date/location imprinting, stabilization shot, 720p @ 60FPS recording option, White balance, Exposure, Light sensitivity(ISO), Contrast, Sharpness, all of these should be added.
Increase folder size
Birthday's in Calendar - show how old is person is turning into
Maps - Drop more than one pin on the map, routing between them
Delete photos from Photo Library
Being able to view file information in photos (say date of taking etc)
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)
Calendar events in Notification Center/Lockscreen - Configure look at head
Calendar event badges on calendar(with an ability to adjust how far in advance you can see your events, 24hours, 7 days, 14 days, etc..)
More pull down to refresh throughout the system
Private switch in Safari
Safari UniBar
Smart Playlist creation on the iPhone
YouTube continuous playlist play