The menu ring would have been even better, but it's taken for an essential feature.. one level up in menu tree.
I agree that page turn with joystick right would be a nice addition. And to be honest, I wouldn't miss the history browsing at all if they took it away completely, so I'd like to see joystick left be previous page. (1 page back, not last in history). I think that would be a whole lot simpler for novice users to understand also.
Longingly I wish... If only our developers had enough access and information to write something like that as a hack.