I'm sort of surprised any time I hear someone suggest that WDW fans will be harsher on the retheme than Disneyland fans.
Historically, Disneyland fans have pretty much always been known to hold their park to higher standards than people do in the swamps, and they have reaped the benefits of that in the form of higher show quality standards, greater respect for history, and (relatively speaking) more conscientious park management.
A quick look at Disneyland's 50th Anniversary Celebration compared to Walt Disney World's might be enough to show the difference in the fanbases. Each coast is tuned to what its guests will settle for.