Underground Pillager Villages

The underground for 1.17 is currently lackluster in terms of generated structures (as of 21w08a), an idea I had was maybe underground pillager villages. I know this seems a little weird but hear me out, unlike the pillagers in the surface, I was thinking that  the pillagers that inhabit these villages could be neutral. Now, these villages can be just for show, but I was thinking of maybe adding another trading system as well (like what was done with the piglins). Unlike the traditional trading system, maybe this one could be sort of like a quest system, where there are random trades that change everyday and the player has a limited amount of time to retrieve them in exchange for an item. Now, these inhabitants don't necessarily have to be pillagers, they could be miners maybe. I notice how the mobs that can trade (like piglins and villagers) have a counterpart, like a zombie or zombified piglin, so maybe the counterpart of these pillagers (or miners) can be a new mob called ghosts. Ghosts can really spice up the underground in terms of mobs.