hmm, I dont think different costumes would be a bad idea, I think Vegeta's Majin outfit is his best, Goku has his Arlia outfit, Gohan can have Saiyan Armour same as Trunks, Piccolo can have his Weight Armour on, Krillin can the Saiyan Armour he wore on Namek, Frieza has his mechanical body, Cell...