Have you ever checked out
Sillof's Workshop? He does a lot of customs including alternate versions of characters such as steampunk Star Wars and such.
I check out the steampunk stuff...mostly by a guy named Ratfink. There is a boatload of that type of custom on youtube as well. Very creative.
This guy does cool shit with the characters like WWII era, Film Noir styled, Medieval European and Japanese renditions, and Old West.
He even did steampunk Avengers.
