I agree, Alex. But, like Duffer said, it would be a sandbaggers dream. Correct me if I'm wrong, but aside from being able to call yourself a Tour Legend, there really is no benefit to being a Tour Legend? Ideal way to do it would be similar to the PGA Tour. Bigger purses / prizes / perks for playing at the highest level. But, players are also forced to maintain a certain level of play to be eligible for those events. Give people a reason to want to compete against the best to make it worthwhile and make sandbagging less attractive.
The way the system is set up now, every good (and honest) player will eventually be a TL. I will be shortly, and in no way shape or form do I believe that I play on the same level as the best on this site. But, because I have played X number of good rounds over X amount of time I will eventually be grouped with them.
Re-tier players every six months. Top 500(?) based on the past six months in the top tier, with big "money and prizes" up for grabs. Next few thousand or so a tier lower, with lesser prizes but chances to play well and earn a possible promotion....
I'm rambling.