If you could add one playable creature-race to an RPG, what would it be?

>may or may not be an idea stealing thread, please don't share if you care about that

The Overlord MMO was cool because you could play as crazy monsters with insanely indepth character leveling, confined character classes, and infinite exploration (without wikifags).

Get that shit down and we'll have peak. Stop making me fetch 10 dragon eggs or some shit in your MMO as a generic humanoid.
What if I want to dedicate myself to being a Crab-Blacksmith that makes weapons of godlike power?
No?
10 dragon eggs and 5 sheep?
Ok.