Okay, so here's the main thing the next MK movie needs: it needs to completely disassociate itself from Mortal Kombat 4 and before!!! Those games are now becoming 8 to 13 years old. Most of the mainstream audience has forgotten about them. It needs to focus on the Deadly Alliance. It's fresh, it's contemporary, and the Shao Kahn story was done in Annihilation. Forget him, forget the cyborgs, forget the Outworld invasion. Quan Chi and Shang Tsung! It'd be an easy transition from the first movie to this one (if that is indeed true from what you said).