I can't think of any reasons why one wouldn't, besides practical things like time and money.

Have you ever done a track event?

Its more like a glorified auto-x

I've never done the Gainesville course but if it's a "glorified" auto-x, then Roebling will be a nice change. Higher speeds no doubt, but with plenty of runoff room and all corners are long sweepers. A great track for beginners, easy to learn but hard to master. Pretty easy on the equipment too.