On both the PC and pocket edition versions of the game, there is a game known as TNT Run, in which the ground is made up of three layers of TNT which gradually fall over time. If you could add the ability for blocks to randomly fall withen the one - three layers of Tumble, even if it was optional, I believe it would make the mini game a whole lot better. Players would no longer trap themselves on mini islands where no one could reach them in shovel mode, because they themselves could still fall from the block underneath them, plus it adds a fun bit of variety and randomness into what was already a great mini game. I'm pretty sure that commands can be used to get falling blocks that don't look blocks that would ordinarily fall (e.g. falling magma blocks) on the PC version so I'm sure this is possible on console. It might create some lag but only so many blocks could be falling at once, and they could despawn once they touch lava. If you don't want them to fall, they could disappear but make a smoke or firework trail particle effect when they do so. What is your opinion?