Ever since Melee, we've had three actions commonly mapped to the four face buttons: Attack, Special, and Jump. Jump often gets mapped to two of the four face buttons. But, what if the fourth face button could serve its own function? Recently, while designing movesets for X and Zero, I found myself struggling with how best to implement their Dash ability from MMX. Should it be their standard dash? Should it be a side special? In the MMX games, dashing is often mapped to a separate button. Si