Quick Question about controls

Just hypothetical but with the forums closing and the game not being received as well as it could have been…

What would have happened if Capcom just released the game with an 8 button layout instead of 6? I mean, the game had no arcade appearance anyway. I just wonder want would have happened if the game was 3v3 with the stones. The only thing that would have been weird is soul stone. This isn’t me complaining about the game or anything, just asking a question