Those roller things look fun...but like you said, look like one hit wonders
The progressive rollers are actually on the trail that rings the freeride area. I liked 'em, but anyone who rides DH/FR up here will not find anything there very challenging. For Florida riders who aren't used to steep natural terrain, they're a bit scary. It was funny- I ran into a couple guys there and rode with them. These guys hit the dirt jumps no problem, but the steep dirt side of the dj start ramp scared em, and neither of them would follow me off the steepest of the progressive rollers.
All in all, it was definitely worth the 1:15 drive from Orlando to ride there, and a 6" trail bike is ideal- not too heavy to pedal around on the flat XC trails, but enough bike to handle the jumps and drops.
Highbridge jumps are going off. Last weekend sucked, but two weekends ago there must have been 20-25 guys up there riding on a Sunday morning despite the 30-something degree temps and mushy jumps. We've got folks doing ongoing maintenance in rebuilding the end of the jump line, so that's coming along nicely. As Lenosky said in his MBA article, they're in better condition now than when we opened them.
I wish it would stay below freezing long enough to get some good trail rides in. The freeze/thaw thing has made conditions on the XC and freeride trails rather poor for the last few months.