In the demo there were three variations to choose from. Are there always going to be three base variations that people can choose from?
Yeah. The game will come with the “regulation” versions of the character, and you can add to one and build it. We’re kind of still thinking about whether we want to make those three fixed. We can let you copy and paste and then build from there, but I’m personally leaning towards having some base ones, certainly for competitive and tournaments.
I've extracted this from an interview to Ed Boon, you can find it here:
https://www.gameinformer.com/interview/2019/01/17/ed-boon-talks-mortal-kombat-11s-variations-changes-and-roster
Are we sure we don't want custom variations for competitive play? I think it would be very fun if balanced.