Its all fun and games untill they start killing you and taking your place. Which explains why so many people stop producing decent work after becoming famous. You say they're not the same, or just producing shallow imitations of what they used to do. Truer than you know. It gets really wierd though, when the other dopplegangers don't notice, and start replacing one-another in the same person's role.Adapt that to gaming. Heroes as celebrities, bards fill the role of YouTube or MySpace. Imagine the party arriving in town, only to be flocked by hordes of gasping and starry-eyed slightly smaller versions of themselves acting like dizzy, excited, gibbering tweens and teenagers.