Sorry but i think it doesnt need more categories.. If you insert a feel categorie tomorow the next guy want a nsfw categorie, and other peoples categorie XYZ.. Its enought. Its good how it is, we dont need more feel, we need more fun. Its fun-substance not a "post whatever picture you want" board.
The point of the categories is to sort the substances. Also it allows us to not have to look at things we don't want to. I think a feels category is a good idea considering how many people complain about them.
You'd be no1