i like the idea of a helmet editor, and without limitations, people would screw up the hitboxes, but if there were limitations (the helmet cant be any smaller than the wearers head and it cant be larger than an outer boundary) it would be really cool. alternatively, you could mix 'n' match parts of all the helmets you've unlocked to make a brand new one, say, a Jfo visor with the EVA lower part and one of those armor plates that go over the helmet's 'forehead'.