After using the new interface for a while here is my 2 cents:
1- When a map is shown, I'd rather when I click to get a full page (may want to get directions). Now it could zoom in with mouse in that small window and not let me go back!
2- The dark terminal theme, when I click anywhwere in the url edit box it blinks, which is disturbing because I may be double clicking a word to select it.
3- The fact that url edit box stays on top is IMO not a good decision, it is much easier to always have it