Personally i hope when it comes to MK10, is that they resurrect as little of the old fighters as possible and that after MK4 storyline, they steer clear of any of the 3d MKs plots. The whole idea of the reboot was in the fact that now that Shao Kahn is dead, future is changed and new things can happen. What is the point of it all if it just ends up going the same path except this time Raiden is the winner in Armageddon since Shao Kahn is no more?
So basically i hope that they go through MK4 story since Shinnok and Quan Chi are still cool villains(and confirmed at end of MK9), but after that, make up something new, new plots, new characters, new paths.
The storylines of 3d MKs were pretty horrible anyway, why would anyone want to go through all that again.