I don't know. I spent a weekend at Winter Park, Colorado, where they had a "Fun City" set up. $53 for a full day pass for a very good alpine slide with a half-hour turnaround first thing in the morning that turned into 90 minutes as the day went on, a rock-climbing wall with a half-hour wait all day, a trampoline jump with a half-hour wait all day and a maze. And a ride to the top of the mountain.
Elitch Gardens here is $46 for the day for a dirty, sort of beaten down park with hour-long waits for all the big coasters, two of the major rides out of service and chipping paint everywhere, where you weren't allowed to even bring in your own water bottles. Water World here is awesome, but it's $44 for the day and everything has at least a half-hour wait unless you pay another $25 for an express pass, and that only helps with three rides.
Theme parks are expensive. I don't think WDW is out of line when it comes to value.
As for new experiences, I think that's natural for people who have been to the parks more than once, and are old enough to write on message boards. But when I think about it, the most amazing innovations they've had have been the queued M&Gs. I hate them because I don't care, but kids do, and it's an experience they can't get anywhere else -- the chance to shake the hand and interact with one of their heroines or favorite characters. I may lament that it used to be special and just a part of the experience to run into them on the street, but my kids positively beam when they get the chance to hug one of those princesses, and it's a feeling that lasts longer than the excitement of any of the Mountains.
My wife has a friend who just got back from DL, and she summed it all up -- the trip was maddening, but the pictures are wonderful. Because I'm starting to believe that's what all the Disney Resorts are about -- getting great pictures and fun memories. It's never been about a constant state of thrill -- it's a way to spend a day and give kids chances to do things they can't do anywhere else. The new lands may not be perfect or even all that exciting to us, but they will be unique, just like US and Harry Potter. The rides may not be heart-rendering, but they aren't meant to be -- they are about good pictures and all-encompassing memories.