Hey Fox, if you're still thinking about a sequel to the poor flick you released, then I'd strongly recommend you to ask Funglisoft for consulting, I bet they could radically improve your understanding of Dragonbal! Or even better: actually should outsource the production of the next DB movie to them!
Just watch what Funglisoft did for DBZ:
This clip was done with a limited budget and with amateur actors. Still it looks way better than DB Evolution!
So, please, if you really want to make DBZ the movie, hire the guys from Funglisoft!