As you progress through the game you end up with a whole lot of recipes in your book. It would be a very nice QoL feature to be able to mark things that you build frequently as a "Favorite" and have a Favorites header at the top of the crafting and building section where you can find things you have marked.
It' gets quite tedious constantly wading through all the crafting stations in the build menu to find the Simple cooking station every time you want to build a campfire to rest for the night, for example. This idea would remove that tedium.