You know how there's Conquest Mode in Smash 4 online? You know the one where it's a popularity contest? I think you should implement that feature in Smash Bros Crusade's online mode and maybe further expand it? Like for the rewards, you can give out trophies that the player hasn't unlocked yet or maybe unlock a stage for them if they win! I think that would be a cool addition. I also have another idea, this probably won't happen but I think it would be awesome if you were to bring the battle system from Kingdom Hearts Chain of Memories into Smash Bros as a separate mode called Card Battle, each character's final smash would be a sleight! You would also be able to customize your own deck, of course you would be able to add in item cards. http://kingdomhearts.wikia.com/wiki/Kingdom_Hearts:_Chain_of_Memories#Card_System here is info for the card system!