Penn was the bomb during his time.
IF he has anything left to show, i'll happily watch, but i don't want to see him get battered again.
EA UFC should make a game next time around that features the ability to unlock legend fighters with a skill set and ranking that reflects their prime. It should still feature all the current "prime" fighters, but you should be able to at least have a mode where you can play all the greats that ever were, at their peak, and pit them against each other and current fighters.
I'd pay 'bout tree fiddy for that.