One word: Monkeys!
Clearly, the hallmark of any respectable virtual fighting game worth it's salt is whether or not it has cute lovable primates. Do the monkeys clap? Do they jump up and down? Do they freak out when you kick them? Do they harass you for food? Can you "tag" one of the monkeys into the battle? Do the monkeys learn to imitate you? Can you train a monkey and then send it off into battle? Is there a special monkey vs. monkey battle mode? Can you upload your monkey onto Xbox Live and share it with friends, seeing who has the best trained monkey fighter?
This is gonna be the best DOA ever!!!!!!