GATHER some REDDIT rumored leaks to go along with this stuff(take w/ a grain of salt)--------
NRS is/was fully aware of those videos criticizing their animations, Erron Black being the one that was focused on the most. It's why MK11's cinematics have improved a ton with the cinematics, the intros, the winposes, the fatalities, how the characters behave while fighting, standing, etc. Color was another thing that was criticized with MKX
Erron Black was their first character they decided to bring back from MKX, mostly because of his popularity but also because of those videos. One of his fatalities is called Bullseye; think the James Bond intro but it involves shooting out the opponent's eye.
Sub Zero was added into Injustice 2 as a test for Noob in this game. A lot of Sub Zero's new moves from Injustice 2 are given to Noob here, like the clone divekick.
Noob has customizable gear which makes him resemble Sub Zero from the movie.
Shao Kahn, Baraka and Erron Black are time displaced; all from the past.
Shao Kahn's hammer variation is full of slow and unblockable moves. Another variation gives him taunts that buff his stats, or affect the opponent's stats.
Baraka's voice was lowered in pitch to differentiate from MKX Reptile after many fans pointed it out. Reptile will have a new english vo