The "infinite jump glitch" is a major discovery that skips 2/3rd's of the game and as such deserves to be its own category. "All medallions" is for those who wish to run the game in a somewhat normal progression and have the opportunity to play as a character other than Kung Lao. I don't understand how it is "50/50" terms, one category you beat the game as fast as possible using any means necessary, and the other category has the added caveat of having to open the medallion door which forces the runner to play all the levels.

All secrets is not possible outside of 2 player mode and there hasn't been a 2 player run yet. I'm not entirely sure what constitutes 100% but if it would require all the red koins then that would have the same problem as All secrets. Also, to do a true 100% run you would have to start on a new save file meaning you would not be able to skip any of the cutscenes and that would not be very fun. All bosses could be an interesting category but it would essentially just be All Medallions with some added backtracking. The infinite jump glitch could possibly be used to fight Ermac and Mileena early but the run itself would still be very similar.

I do somewhat agree that the hard difficulties may not need to be a thing but as this game only has 2 runners, and not a lot of traffic/interest, I see no reason to delete them right now.

I think the hard mode is actually pretty easy in this game, but I'm not planning on running it for a while. We can delete it, if that what everyone wants. I hate looking at multiple empty categories.

I like the idea of a 100% category, but we'd have to discuss here what that would entail. If I remember correctly, the game maxes out at 177.1% or something like that. It included finding every secret, beating the game with all four characters, defeating the secret bosses, the smoke missions, and beating the hidden boss rush mode with all four characters.