Hard to do that when you're trying to roll backwards from a melee ork on that one snowy supremacy map (I forgot the name, sue me) near that A point and instead of rolling you get thrown off the ledge because you can't see that there's a railing behind you?
Then hope that someone with the power to change it sees the thread I guess and try to split the actions. Perhaps have a double tap of the movement button perform said roll? Other than that I cant think of many buttons Id like to use as my roll key other than space bar.
Another fruit in this basket is that when you don't stand in the perfect spot and want to vault, you instead roll against the railing and thus waste stamina.
