For some, change is a 'dirty word'. The truth is that with any change, someone won't be happy. That's just life. You can never please all of the people all of the time. It's an impossibility.
While I am usually open to change, there are times that I don't love certain decisions (ex. closing the People Mover, painting Monstro blue, or that silly Rockin' Space Mountain crap).
Other times, they have made good decisions (ex. replacing Country Bears w/ Pooh, ressurrecting the subs and rebuilding Space Mountain). Disney isn't always going to get everything right, but they've gotten it right more than they've gotten it wrong or their resorts wouldn't be as successful as they are.
As open as I am to change, there are certainly some things to me that they should never change -- at least too drastically. I mean, it's cool when they incorporate new things into classics like The Haunted Mansion and Pirates that enhance the attraction while not altering the overall ride. But if they went and changed the voice of the Ghost Host or replaced "Yo Ho!" with a different song inside of Pirates, things like that would be completely unacceptable.
When it comes to changing or closing attractions, there usually is a good reason behind it. If Country Bears was getting packed houses for every showing, it'd still be around today. They likely looked at it as a building they could 'upgrade' with Pooh. While some are critical of Pooh, for me, I usually do Pooh once a day while I'm there where I probably wouldn't do the Country Bears more than once during my entire vacation at DL. So, for me, it's an upgrade. For the one-day visitors, it might not be.
Anyhow, I'm more pro-change as opposed to being staunchly against it. I know I won't always be happy, but I don't think 'change' is a dirty word at all and feel it's necessary for DL's survival.