Seems when submitting runs currently all player slots are required to be filled. Would there be a way to disable this requirement so solo/duo/trio/quad runs can be properly submitted?

I would have two suggestions for new categories

All characters Run through normal/hard mode will all characters consecutively. Currently, only Monty and a tiny bit of Roxanne in "max level" are seeing any play within runs. This would give the other characters a category in which they can be prominent/played as well.

No damage Run through normal/hard mode without taking any damage. It's similar to three-star, but would probably be even more difficult and could definitely give a platform to showcase some more advanced enemy management/stun tech.