But on the other hand, if they can pack a 4.5" or 4.65" screen into the frame of the current 4.3" phones by removing the capacitive buttons and utilizing more of the face of the phone, I would be 100% for that.
I take back my comment. I think the current size of the 4.3" phones is the sweet spot. Not necessarily the size of the screen, but the phone itself. If they can get 4.whatever" into that same size... I'm game.