I was always quite fond of the notion that maybe the next SSB could have a "build up special move" meter type thingy. It could be built up to level 1, 2, and 3 attacks. The third of which could be a characters, "end all be all move of moves" um, move. 1st and 2nd type attacks could be combo variations or even multipe specials thrown together. And the only way to build up this so called "Special Meter" would be to inflict damage with regular A button attacks or by taking damage yourself. I just think that something like this would bring a LOT of variation into the world of SSB. It's BADLY neeed. Oh, and more characters would be a plus, too.