See but here's the thing: nobody talks about it, but NRS is clearly running its franchises on a mobile-esque model where they make money for having you come back and log into the game frequently. What they've done with MK11's cosmetics system is exactly in line with what they did to MK Mobile a few months back, which is very similar to what was going on with Injustice 2 on both mobile and console. MK Mobile had, for like four years, every character and augment accessible in the store for set prices any time you wanted to pay them, OR you could buy a pack (basically a loot box) with only a chance of getting what you wanted but for a lower currency cost. But right before MK11 dropped, they changed it so that the in-game mobile store only has a rotating inventory of three random items per 24-hour cycle, and then they slotted in new rewards for challenge towers (essentially the mobile equivalent of ToT). So I don't know exactly what their strategy is, but this thing where we keep coming back to check the game frequently for randomly occurring access to what we want is a central part of it.
P.S., It sucks.