Any% Hoverless in SMS is much different than Any% "Touchless" would be in SM3DW. In Hoverless, there are many more differences with routes and tricks, it actually makes for an interesting run. "Touchless" would be basically the same run, but with slight differences in some areas of the game. It's not a big enough difference to warrant a new category imo.

If you took touchless out and had a touchless% you would change maybe 5 levels and not with enough intensity to warrant it's own thing. Having character specific categories isn't a bad idea but not necessary as no one would run them and it makes categories look messy and leaderboards look messy which puts off runners thinking about the game (as someone who has had to deal with things like this with Yoshi's Woolly World I know exactly how much of a problem this can be)

We did used to have a Mario% which was just Mario and no catsuits but after about a week no one bothered and it was never put on these leaderboards for that reason.

It's not that they're bad ideas but they're completely redundant and unnecessary and therefore very likely won't be added