I can see it now, Banjo and Kazooie will be the special addition to the 360 version. Banjo will grab them and Kazooie will peck their eyeballs out.
You could have another fatality where Kazooie poops a grenade egg and the opponent picks it up and shakes it and it explodes him into giblets. Or Banjo could pin the guy and tear his intestines out with his bear claws, and Kazooie can eat the entrails. It'll be perfect.