My first idea would be itemless%, it would work like how sm3dw itemless% is so temporary power ups like the Star and Giga Bell don't count, also mushrooms since it makes the run just a bit better. My second idea would be a relay, you play any one of the game modes, beat that game mode, then switch to the other, and beat tat game mode. My third idea would be Bowser Jr's. difficult level, if you're going to speedrun BF then you will obviously choose a lot of help, but if there are different category's then there's a reason to change the help level. My last idea would be each character has their own category because nobody would use Mario speedrunning sm3dw, but now there is a reason to use Mario. @Chatcatchase123 suggested coinless and damageless too, so thanks for him to the idea!

My first idea would be itemless%, it would work like how sm3dw itemless% is so temporary power ups like the Star and Giga Bell don't count, also mushrooms since it makes the run just a bit better. My second idea would be a relay, you play any one of the game modes, beat that game mode, then switch to the other, and beat tat game mode. My third idea would be Bowser Jr's. difficult level, if you're going to speedrun BF then you will obviously choose a lot of help, but if there are different category's then there's a reason to change the help level. My last idea would be each character has their own category because nobody would use Mario speedrunning sm3dw, but now there is a reason to use Mario.