If a new tier does come out, it should be something you earn a position in and not get bumped into, like some players did when they changed the system a couple of years back. I made legend by getting my average low enough, not because WGT thought I should be there as happened to some players.
I'm more than happy to stay as I am and not be allowed to enter Ready Go's or matchplay challenges.
at the end of the day this is just a game, and I find it quite hard enough, and expensive enough, If you need a bigger challenge use starter balls.