Suggestion

[ik that it will be a complete rewrite of JEI but maybe could be a good idea to be considered on a future]

I think that probably any mods use mods like JEI and some of them have made some custom jei categories or other stuff

But today , where many other mods are only made using datapacks it could be good to allow to "manage" jei stuff like jei categories / configuring IO validation / relationing jei categories with minecraft recipe types etc.. just using json (datapacks) and resourcepacks

Also for real modmaker they could use datagen to create everything at same as now