[@VitaVitaAR] Well, if thats the case, then why is the GM so worried about character diversity being a balance issue? Only GMs who want people to die consistently worry about such things. Otherwise you do what your saying, kill them off if you need to, but its a story death like how death SHOULD be in a story medium such as this. 

Let people make who they want in this universe without watering it down. (Or just don't call it a shonen anime OR list a more tame one instead of showing all the big 'over the top' ones in the title.) With rules of course, but not such restricting ones that make Captain Planet look more interesting.