Ended up going with MK Komplete, and I am NOT disappointed.
The story mode is indeed fantastic. Almost like playing a movie. And it has good nostalgic value, but the timeline variations keep it fresh.
And the gameplay! I didn't like any of the MK's since Deadly Alliance.. None of them really felt like Mortal Kombat to me. But this is the first MK game since the original three that feels like a Mortal Kombat game.
I'll be picking up Ultimate MvsC 3 down the line, probably. Hopefully the netcode is better then MK, which is its worst feature and results in frequent disconnects.