I was a bit perplexed at first but it’s growing on me and I like and think its an improvement.
The new icons and lock screen behaviour is pleasing on the ey
New safari is better and I like the new implementation of the “reader” which is a quick and easy way of just getting text of a story, good for me if I don’t have my reading glasses
New organisation of photos is very good, needs the location turned on for when you took them to work best but that’s what I’ll do going forward. I like the fact videos/panoramas are grouped separately in one view
New message (SMS) display great for me, very clear and as above perfect for when I don’t have my reading glasses
New camera app more intuitive
Update Vimeo app is very cool (ok not iOS7 specific perhaps ?) preloads videos and runs them whilst you are browsing so you see more than just a still, makes it easier to decide what to watch
New alarm tones
Music app – certainly different, not sure if its more appealing to the eye, benefits from having Album/Song artwork\
Facetime voice only will be useful