I think if I was in charge of PSASBR 2, I'd make it a lifebar based game - still a platform fighter with the standard mobility options and moveset layouts, but all the stages are walled up (with pits perhaps being part of a crossover hazard or two) and a lot bigger than the average Smash stage, even for the stages designed with competitive play in mind - it'd have a meter a bit like NASB 2, but every move's upgraded form takes a different amount of meter and there are - like PSASBR 1 - 3 supers