Honestly While bloodlines are cool! i don't think they should actually be in game just for the fact it would ruin the real time fighting if some one had haku's ability! see what i mean! as far as cool downs go i think they should be in place just simple for the fact some one could like stated just spam it out and grind levels! The weapons would be a sweet thing to have in -game but you should be able to kill someone with said weapon and pick it off of them for pvp! that right their would be epic.