Not allowing custom variations to, at the very least, be available for online competitive play would be an utterly disastrous decision for the long term health of the game.
MK11 will be SO much more interesting two years from now, if we have custom variations riding online.
If they were going to restrict custom variations, they really should have made that decision before the beta was released. Once they let us do what we wanted in the Beta, they had an obligation to let that shit ride in the real game. Otherwise, custom variations = biggest tease ever.