As much as I loved MK9 (Smoke was the best and any game without him is worse for it), Shaolin Monks is the only answer for me.
Even if they don't give us all characters in Shaolin Monks' story mode, PC will have mods to make it happen. Shaolin Monks needs to happen.
9 doing so well also speaks to the current state of the franchise. Fans are more interested in when the franchise was one they liked rather than whatever it is now. Chances of that Mileena costume are somewhat diminished in the current year, though.