I’ve been playing with the iOS 7 beta for the past few hours and the “Back” gesture is easily my favourite thing about iOS 7.
The translucency is nice. The buttons not looking like buttons is for the most part not even an issue when you’re actually using the thing, because, you know, there’s other ways to highlight that like colour, weight, and people still read labels. The structure and placement is also obviously similar to previous iOS versions. It does feel cramped at times for sure in the Navigation Bar. I will say the Game Center log in button is horrendous.