Wow - When I saw SCV's show in Glendora, CA, I said almost the same thing you said above. I am a HUGE SCV fan, but when they were done, I turned to my friends and said, "wow that sounded pretty amazing, but it could have been done 10 years ago. Not much new." I just didn't think it was very creative - BD had just performed and the crowd had gone crazy.
I think this is something that BD has made most of the other corps do. Since every year they are stepping out of yet another box (love it or hate it) and coming up with something else new, and doing it EXTREMELY well - and almost always being in the top 3, what are the other corps to do but follow. Those who don't - who try to live on some past glory, play Scheherazade again. Don't get me wrong, I think Scheherazade is beautiful. It's just been done. Those who do step out there and try to be inventive and new are almost always appreciated whether they win or not - BUT they gain respect by the crowds/judges/other corps in the process (provided that it's done well). Bluecoats are a great example to me this year. Their show is extremely inventive and played incredibly well - SO much better than their 2013 show to me. We'll see how they are rewarded in the end.
There is a lot more I could say about a lot of the corps, but we have seen several great posts from fans that have been saying the same thing in their own way. And miles to go before we sleep . . .