Richard4168: The Legend player has everything they need to post low scores, and earn credits.
I think the problem is that everyone, regardless of tier, has everything they need to post low scores and earn credits, however everyone doesn't play from the same tees.
There is no incentive to tier up, only penalties. In fact, when it comes to incentives, all of them are aimed toward staying at a lower tier. Lots of incentive for that.