Mob idea

I'll cut strainght to the point, I think the stray/wither skeleton, husk/drowned and the cave spider are a very cool addition to minecraft, as they are diffirent versons of skeletons, zombies and spiders. But the thing I think would be very cool is if there were more diffirent mobs under each category if that makes any sience, like if a creeper had a cave version for example. In my eyes it would do wonders or even make a balance for the mob system and the diffirent biomes, and I think a lot of people would love the idea, just as I do. I have also thought of the idea of having a zombie version of the strey, og a skeleton verson of the husk. Thaks for reading.