This could actually be incorporated into the mycus (mushroom mobs). Like, it would diversify them.
In another thread I was suggesting making the fungus spread more like a root system (but graphically and lore wise would function the same as now), basically to change the game mechanics a bit, and make it less annoying. But it would also add dynamics to the artwork and lore.
PS, don’t do as I just did and watch stranger things… it will give you too many ideas.