I like to take my gliding discs along when I travel.
I think the potential for Gliding has not been fully realized yet. The discs can definitely be used for advanced moves.
Doing rear lungews with the discs keeps the moving leg engaged throughout the move rather than just during part of the move. And it's nice to use the discs on the moving (but 'non-working') leg for one-legged squats. They also can be used for some pretty intense hamstring work (think of the stability ball roll-ins, but done using the discs on the floor) and for pec "flyes" done in push-up position. They can also be used for cardio, doing "skating" moves (similar to what you would do on a slide board).
The existing workouts (not including Mindy's latest, which I haven't seen) show various levels of intensity, but the sets are often too short to really make them "advanced."