Al Lutz kinda slammed WDW fans by saying that WDW doesn't get the good attractions, the fans out east only get what they deserve. As I remember, he got some very negative comments on Miceage after that. He is implying that it is the westcoast annual passholders, like him, and his friends, who were 'rewarded' with Carsland and other recent additions because they have complained for years about standards at DLR, some picked up by major newspapers.
Well, I think a fuller picture is that DCA was bringing down the resort financially, and was being ridiculed by more people than just Miceage et al. No way that DCA 1.0 could hold a candle to today's DHS. So, Disney built Carsland on an expansion pad, and did a cosmetic refurb of Sunshine Plaza which turned it into BVS, and added one low capacity ride. Paradise Pier is still there, albeit with a fresh coat of paint, though some of the carny attractions are gone, it is still a 45 minute wait for a turn in the ferris wheel.
Supposedly, Disney learned a lesson with Carsland, and that was that you build heavily themed lands, instead of just dropping down an attraction that doesn't fit in its land. I can't see how on earth 1/2 or even 3/4 of Carsland would be placemaking, if there is no Cadillac Mountain range, then it ain't Radiator Springs. Gotta build all the character's shops/establishments too. This isn't like a Star Wars addition were nobody has a good idea what it will look like, this is a recreation from a specific film, Cars, and Carsland has to be true to that.
DHS is a hard nut to crack, the Hollywood theme is everywhere, but I kinda think Disney learned their lesson, and they're not going to try little stand-alone projects.
Look at Avatarland, that is placemaking. NFL also attempted to produce a unified land theme, (though there are sub-lands and I don't think this worked very successfuly from a thematic standpoint.)