I don't have particularly strong oppinions about the browser concerning how it should be made better, I think it's great the way it is.

The need for some of these improvements I do see, however, but there's a bottom line that makes me dislike most of the suggestions: I don't want anything extra, be it temporary or permanent in the browser view. Juggling between the two borders is too much clutter already, I think. I don't want any additional visual elements on the screen ever.

About the finger gestures:
I think gestures like the circle zoom that's already implemented sounds good, but then there must be an option to eliminate these gestures as well. Also, I don't know if there's a lot of gestures we can carry out on such a small screen. Reference point: trackpads on laptops, I've seldom felt that gestures you can do on these really save you any trouble.