As a DVC owner, I would disagree with Another Voice's assessment that they need new rides to lure DVC owners into going to WDW. DVC owners go to WDW at a minimum of every other year, and many go several times a year. Many don't even get to the parks on more than a few days of their visit since they go so often.
DVC owners know that, unlike other visitors, they are DEFINITELY going to come back in 6 to 12 months, so what's the difference if the ride is open now or later?
I'm going for a week at the end of April, early May. It would have been nice if Mission Space and Philharmagic were or are open, but that doesn't affect my trip plans. I'm going before it gets too hot and between very crowded periods, before it gets too rainy, and during the Epcot Flower and Garden Festival. These other factors are more important to me because I go often, and going when it's crowded, hideously hot, and raining, is not my idea of a good time.