It sounds like we have about the same idea. Here's what I think they should do - Make MK11 a massive expansion to MKX, basically MKX 2. Double the roster, stages (with more MK9 stages too), fatals, intros, brutalities, new story, hara kiris, and tag mode added. That way we could get a ton more balancing done and hopefully fixes to most of MKX's big problems. On top of all that, they should include an updated MK9 in it with re-done balancing, the new netcode, and maybe even graphical improvements. Probably wishful thinking but I think this would be perfect.