So as of now there's this option in the mod to display recipes only if you have at least one of its ingredient.
My problem is that it's really for convenience right now because you can always view every recipe in the game from even simple planks.
What I suggest is the possibility to extend this concept and truly lock the recipes to which one has none of the ingredients, maybe a bit like the vanilla (crappy) recipe book.

=> So what I'm thinking about is to only be able to view the recipe and sub-recipes of the item being checked, but also (only) the direct recipes that it is used in.

For instance, from a diamond, it would possible to view how to craft one (melting a diamond ore), to view direct recipes like a diamond sword, but then it would for example not be possible to right click the diamond sword and view how to make a netherite sword.

Personally I would really like a feature like that because I've always found that JEI ruined a little bit the mystery and the progression of the game. I don't know if you know what I mean or if you've felt that before, but yeah, to me it's the only feature still missing from your mod, which is already so much better than JEI (I'm eager for a forge port btw, I believe that it's planned...).

Oh and maybe a built-in option to hide the vanilla recipe book would be cool too.

I'd really like this feature! Personally I find that being bombarded with every recipe in the game (or modpack) can be a bit overwhelming; the vanilla method of slowly unlocking recipes is a brilliant way to counteract that, and it makes me disappointed most players seem to want to bypass that entirely. Unfortunately the vanilla recipe book has a very poor interface, so if this progression was added to EMI I'd be very happy.

I would also be interested in this, although I would personally just directly gate it behind the recipe unlocks since I believe that would cover everything. The main reason I'd be interested in it is for randomisers, since part of the fun of that is not knowing what recipes are available.