But many who dress up as the character for conventions and such would do this if they could. I'm in the 501st and these guys come to the events already dressed as the character, have the tattoos and even have permanent decals (really large decals) all over their vehicles. I really don't see why taking one more step with plastic surgery is really that big of a deal.
Plastic surgery nowadays is darn near an outpatient procedure and is becoming cheaper and cheaper. I really expect to see a lot more of this soon.
And going back to the tattoos analogy, the newest thing is implants in tattoos. How far away are we from bikers getting "tires" implanted in to their tattoos or "guitars,strings,fingerboards" implanted in to rocker tattoos. Heck, we may even see playable instruments implanted soon enough. (And don't start the skinflute jokes
)