I wish the shows were less rushed and that the World Finals wasn't so dragged out. Backflips are so meh to me now and I don't think I've ever enjoyed them being brought into competition. I always felt they were too much of a fixed move and too predictable. I liked it better when tracks were more unique and unpredictable in their design, but that doesn't mean each track has to be vastly different from the others. That doesn't even mean they need to use cars again. Just make things a bit more unique. Using the So-Cal racing exclusively is fine with me. If there's any tracks that I have real criticism for, it's the World Finals tracks. Ever since moving it to two different days, it really has turned into two giant blobs of dirt with no real breathing room, in my opinion.
As far as the evolution of monster trucks goes, I think 2000-2001 was a really important time with freestyle becoming a sanctioned part of the competition, so the trucks began evolving more in strength and safety, as well as an evolution of the courses and what was considered spectacular.