Well if you are working on the UI, I would really like the compact mode to be an option in the settings itself, lot of people including myself don't really like the default density of UI, It's too big and looks ugly. A lot of people leave firefox jus...
The back button is redundant in android, because it is always there from the system whether using gestures or 3 button configuration. Please change it, use it for something else. Don't be hung up on this design please. Maybe shields icon there would ...