I was surprised MKX sold better than MK9 on some level. visually it is way better clearly but it lacks on other stuff such as roster count and choices, stages count and story mode. not saying story sucked, but I surely enjoyed MK9's much more. in general, I'd love for MKX to get more content but I heavily doubt it because of injustice 2 (also, if they were to add more guest content, F that, no need for more of this crap). they have proved to be creative though so I think they can come up with cool stuff to add in the next installment but after what went on with MKX, I just hope we get more content on launch
I agree with stages and story mode.
MK9 had 25 stages and MKX currently has 13 (14 with The Pit coming as DLC).
Kinda feels lacking in MKX, imo.
As for story, while I agree that the story felt a bit short, I wouldn't have minded the story being that short it it had been better fleshed out.
MKX story gave us more questions than it answered.
Hopefully with Tri-Borg being in we'll finally get an answer as to what happened to Cyrax, even though individual character ladder endings are not really canon until the next game comes out and they either are proven true or false.
As for the roster
count, I disagree.
MK9 had a starting roster of 27 characters (28 on PS3, which includes Kratos, Quan Chi and Cyber Sub-Zero), and MKX has a starting roster of 24 (technically 25 if you count the Goro pre-order), which isn't too far off from MK9.
With DLC, MK9 ended up having 32 total characters and with DLC MKX will end up having a total of 33 characters.
As for roster
choice of characters, that's subjective.
I, personally, thought that MKX had too many Trilogy characters on the main starting roster (14 of the 25).
Given that MKX is essentially alternate MK4, skipped Deadly Alliance and ended on alternate Deception, I would have preferred more characters like Fujin, Bo Rai Cho, and Havik on the main roster, but we're at least getting Bo Rai cho as DLC.