Like I said, I can't say I haven't seen it before. One example was a biopunk RP that had rapidly evolving/mutating animal people as a whole faction. Granted that was not on this site so you could say I'm a pedantic arse. Don't feel like I'm pissing on your parade though, that's still a neat concept that not many would tackle.

Also, me? Sarcasm? Never... (sarcasm)