I think it's more than 25 people, and some narration might bring in more.
I appreciated it greatly, because I can't make it to the Nats, but I do want to keep up. Since I don't get out to the Nats, more mention of pilot names would have been nice -- on at least one of the first five flights I didn't catch the pilot name (if I re-watch I'll find a score sheet with flight order and keep track that way). It was way better than watching paint dry (or glue -- I almost got caught in one of those clamping disasters in my shop today, where you stand still for half an hour holding something until the glue dries, because your supposedly well-thought-out clamping scheme wasn't).
I could tell who was flying well, on at least some of the maneuvers. Getting right behind the judges would have helped (but -- Robert, I understand that it would have been difficult or impossible). At least in that round, in the vertical eights everyone undershot their transition from inside to outside, and did a little "S" going from outside to inside. The only variation was in degree, not by type of error. You could pretty much rank the ultimate placing in the contest by how well they did their vertical eights. Overheads had similar issues. Due to camera placing, it was hard to judge the shapes of the square maneuvers (but again -- that's OK, when it's an Olympic sport, they'll get the cameras figured out).