As ive never played these tournaments before and i dont know how its been made on earlier tournaments of this magnitude, but i do have a suggestion on how to make the final US and The Open fair.
when the quals have been set, the players should have a chance to practice with the championship conditions on each course, each player should be given THREE rounds of practice, just as in real life, the tournament starts on Thursday and players have from Monday thru Wednesday to practice, given three rounds to practice, same should apply on WGT, three practice rounds over a weeks time for all players to have a chance to adept to greenspeeds etc.
My 2cents.