its not like the main game had levels with naija play in mind anyway
Reason why there isn't a category spot on the leaderboards for alted or ww'd dark ending or 106% is simply because no one has ran any of those. If there was a (decent) run of any of them I would be in favor of adding a glitched variant of the main categories to the leaderboard. As for dividing the any%s, no. We don't need a sub-category for every glitch that is found and the ones currently allowed for any% aren't game changing enough to set them into a new category as alt/ww are. Legacy% is so similar to any% that imo if you're running legacy% you're just running a slower version of any% and might as well run that.
How i see it, the goal of 106% is to complete every level as fast as you can and not to just have the game register that you beat (hence the ban of slugger skip and kid skip). Naija clips are different from these in that you are still using level and character mechanics (no matter how silly they might be) to complete a level as fast as possible. Clips with naija is just apart of Naija in an rta setting.