I like the raise to wake, now that I know what's going on (I didn't know about it and it freaked me out).
The new home button/Touch ID behavior is tripping me up at times.
They've still not unified their icons...they still all look like 4-5 teams of designers worked on them and they just picked random "winners" from each.
The new Messages seeems to have gotten complex/cluttered.
Still getting used to the new look of the on-screen/lock screen notifications (and Control Center), but it's okay.
Honestly, as long as it isn't iOS 7, I'll be fine.