Almost every good RLG -- CC has at least 1 or 2 major tournaments a year, similar to our majors here at WGT. In most cases the biggest of them all is a 3 day event featuring members competing against each other from different qualifying levels- i.e. Champ-- 1rst flight-- 2nd flight-- etc. etc. etc. Our 2nd big tournament is a 2 day member guest. In both tournaments, in both CC's that I've had the privilage to be a member of, the player(s) who win the tournament 1 year have a 2 stroke reduction from the handicap that either they won the tournament at, or at their current GHIN index, whichever is the lowest, the following year. I've had the honor to win at least once in both the 3 day member member, and the 2 day member guest. I bore no hard feelings competing the year after having my index reduced and even repeated one year with the 2 shot reduction on both myself and my brother's USGA index, in the 2 day member/guest. He lives quite a ways away and just getting to compete alongside him, is victory enough for both of us.
It seems the main reason this is done is not as much to reduce sandbagging, ( although that purpose is probably also served), but to give everyone involved a chance of winning one of these majors and having an opportunity to receive a free membership the following golf season, or in the case of the 2 day member/ guest, a free set of clubs. In both there are plenty of opportunities to win loads of cash, either in the para-mutual, or from all the side action bets on the night before kick-off. It really should be all about the comraderie and competing for the chance to win, not just winning year after year anyway.
If in fact, WGT ever got with the times and created a system similar to the USGA's index system, and implemented this stroke reduction on winners the following major, many more people would have the honor to win one of these majors here at WGT, not just the same 2 or 3 people all the time. My 2 cents for what it's worth.