I sort of agree with the OP, but the fact is it will never revert back to a tiered club system. The reason it moved away from this is the business model revolves around players upgrading for the better toys the further they level up.
However this topic has been broached many times, with all viewpoints argued. But this model works for the company, so why would they introduce a system that will limit upgrades? Take you for example....you want to get new clubs but you must now grind away.....upgrade now and the incentive is gone!
Yes sandbagging can be an issue, hence why WGT had introduced the weighting into average calculations (lower tier players beating higher tiers and credit tournament wins),
But most genuine lower tier players are that for a reason.....they have not learned the game yet.
The clubs available at lower levels currently is far better than those of us who started a few years ago and thus tiering up has become easier. Add to that, the introduction of red tee games counting towards averages, there are many top tiered players who have a title by default - many of those are easy pickings for lower tiered players rising up through the ranks (and I am not referring to the OP - have not even looked at your profile).