IMO both variants aren't too far from each other. Both limit the players' possible advantages of high-class clubs, that being shorter shots into the greens with more precision - de-motivating to buy the clubs.
From that perspective, I don't value the impact of my "forced tier-up" higher than the other, it's just another approach.
Major difference is that there are no (tier or length) limits but consequences:
"Want those R11s at level 90 - welcome to Legend status!"
OTOH, any industrious player might buy himself into Legend once the clubs are available to him.
Anyway, since both variants are likely to cut into WGT's selling numbers, their realisation may be improbable. Having said this, sandbagging might not be a problem for WGT but a business opportunity (pun intended).