Grians villager idea

I think yall should do something like grains vilager idea where for the libaranins you have to get the book naturally in your world vi fishing or exploring and give it to the villager and they learn how to make that book after fully leveling them up exactly what grian said and for other villagers like the stone mason you can do the same but for non normal stone blocks like calcite. Just a few examples of the idea but this would have to have people explore and do things in the world before villagers so they cant just skip all the prosses. Sorry for the gramer errors I cant see what time timing nothing is showing up