I suppose they set a limit even at Legend to keep open the possibility of putting another Tier in above Legend... Tour Legend? They have the same conditions as Legends, except they have to dodge small weapons fire with live ammo while they play.
-whispered- "Ooh, right in the head... I don't see how he'll avoid a delay penalty here. He may need to withdraw."
"Yes, Chip... he's been laying motionless for some time. He has about 15 seconds to get up and play his shot before he is disqualified. Then I'm sure a doctor will check on him while the next group plays through. How do you think this delay hurts his playing partners?"