Apart from fiddling with the vast amount of points we need to advance, and given equipment is level-based now and not tier-based, it seems like the best solution would be some kind of handicap system. Arguably that would make sandbagging even worse, but it would at least make it more fair for those with honest scores, whether a hack or a legend.
Personally speaking I enjoyed being in the Tour Pro tier, as I was finally able to compete for credits. Master clubs are too fast for me, and Raptures (especially my WGT 245yds driver) don't have the needed distance. Frustrating to go from being fairly good one day to crap the next.
But looking at the bigger picture about scores and realism, the score for legends are very good. I checked many tournaments yesterday, and almost without exception the legends still had the lowest scores of all the tiers. It wasn't a one-off either, overall the scores were better. So WGT do have a point in saying the legends are coping with the changes.
That said, I certainly understand the frustration of those who are now legends but are not truly one of the greats of the site, and cannot compete with the high earners. When the changes were announced I assumed you'd need about a 60 average to be put in the legend tier, so it would contain the truly great players only. That was clearly not the case. Generally it seems to be people are moved up in tier too early.
For a handicap system to work well, WGT needs to be much more efficient at weeding out sandbaggers, or they will gobble up all the prizes. A room of shame would be suitable too I think, as a disincentive. WGT could be banning 1000 people today and nobody would know. But if they publicized the names and deleted the accounts (not blocked them from login), this would be a lot more visible.