Good:
* Menu bar is hidden by default on Linux and can be opened with Alt (that didn't work before).
Bad:
* Menu ("Firefox") button is still not movable for no obvious reason.
* Reload/Stop button is now forced to be in the URL bar (before users had a choice where to place it). That's pretty annoying, it's very uncomfortable when Back/Forward and Reload buttons are so far apart.
* Bookmarks button is now outside the URL bar and looks bulky.