I think that I like RPGs but Minecraft isn't a RPG and trying to stuff RPG features into MC would be A Bad Thing.
If you really want a RPG which is almost infinitely customisable, I would redirect you to Neverwinter Nights, available on Good Old Games (gog.com) for just under US$10.00. The Original Campaign is okay, but the real strength of the game is the variety of community made modules and the still-strong (and free) online gaming community. And the game comes with the module editor and the standalone server as standard. Apply through GOG's support pages for your online keys after purchasing the game.
My apologies to the rest of the community for the mostly off-topic post, but I think it was justified in this case.
I just have a question- what's the purpose of automatic skin? For servers? People don't normally run around in third-person mode, just saying. Even if it was for servers, what would keep each person's skin unique?