I don't care about jumping at all to be honest. If you want to run along the lines of ledges and be bothered by it, that's fine, but to add a feature because you think doing something odd looks odd is a little unsound in my book. People where complaining about the borders being too big so, they shrank them. Jumping won't really add anything to it. That and they would probably have to rework the entire system of movement for the game, but we'll see. It wouldn't be a particularly unwelcome change.