You mean, people aren't going to love M:S in a few years? But, that's impossible, just ask the suits who did all sorts of research into this.
*end sarcasm*
The whole problem is that rides are now rides, because management has deemed it "better". There was a time when a new attraction opened, it was an 'experience', not just a 'ride'. Those times are gone, apparently. At least, gone under current management. Perhaps Everest will go against the grain on this, and I sincerely hope it does, but I'm not holding my breath.