Tim & Jason,
I think Firestone offers you a diversified selection of courses.
South, North and West.
The West has a "sporty", "fun" personality, while the other two courses have their own distinct personality.
Golfers seem to enjoy playing courses that the PGA Tour and the USGA hold their competitions on.
They've seen the courses on TV, they've seen the shots and they want to try their hand.
Who out there hasn't hit a chip, pitch or bunker shot worthy of a PGA Tour Pro ?
Who out there hasn't hit a putt worthy of a PGA Tour Pro ?
And, we all want to try to hit those shots if we get the opportunity to play those courses.
But, I think we shy away from them on a steady diet, and thats where the other courses provide ample challenge and fun.