I'm considering allowing minor god-modding, in the form of moving character in battle.  They wouldn't be able to hurt you, but throwing you into a mountain and following it up with a Ki attack would be fine.  You would then get to decide whether it actually hurt you or if the Ki blast even hit.  I think it would give it a more fast-paced DBZ feel than the usual ("I threw a ki blast".  "I dodged and punched." "I dodged and punched back.") Way a lot of RP player battles go.  We could also set up a titanpad for the battles, but then we'd have to both get on at the same time.