I can't really see how this is going to be good. To me, dragon ball has always been about action, fast paced, and brutal. If you go ahead and "rpg" it, you're essentially getting rid of that element. I don't recall enjoying the dbz rpgs that came out for the snes and the various gameboy platforms. If they manage to somehow make this a compelling game, it'll be the most impressive game development feat I've ever witnessed.