No longer feels like OS X
Killed notes, poor yellow on white navigation
Killed music, no album grid view, pink - white and light grey navigation, poor design for controls, way too simple
Safari bookmarks / menus feel messy, very white
All the white and 1 pixel strokes feels too basic and cheap
No real progress in functionality besides airdrop, Siri improvements (some) and control centre
Still no file system
Photos app is clunky
Contacts has one of the worst icons ever created
Animations still take too long and you can't speed them up by tapping ahead
Only 9 icons per folder page
Transparency is still buggy in some apps, safari, the dock
Alarms (via clock app) messy if set too close together
No quick reply
No Siri in the background for hands free operation
Parallax is good but there needs to be more if it
Multitasking takes longer to close multiple apps
I really don't like the fact it's going to get slammed in the media for being a paint job and branded as 'apple losing its way with innovation'.
Don't get me wrong, I've used it on a mini for weeks and it is good, but it feels like a step backwards in some areas and feels like it needs something else. They need to break new ground with it somehow, a new menu or file system and way of interacting with your content - replacing gloss with transparency isn't a solution to anything.
/2 cents.