I'd like to see keyboard shortcuts done with the BB keyboard(s) in mind rather than with a phone keyboard. Top/Bottom is generally #3, I believe, but on my Curve that means hold down the Alt key, hit Q, hit R, release Alt. As a shortcut it's not very short (or Alt-leftshift for numlock, then Q R). I suppose I could just put the phone on numluck while using Opera, but that seems unintuitive.
I'll second the requests for "native" input as well, though I suspect that's a harder issue to deal with.