[@VitaVitaAR] I'm not saying stuff like that should happen. But having it so watered down that you drastically limit variety for the sake of 'balance' between all the PCs seems silly. (besides, someone with a super strong barrier as their only ability makes perfect sense. One Piece has such a character and they still make it work well. Yeah you need to balance that exact ability, but its super easy to do considering how those rules are set)

But remove that whole "this is One Piece/Naruto/Bleach/ext... all in one" concept which is not what the OP is going for at this rate, and choose something more tame like what [@Zero Hex] said and pretty much all my issues with this go away.