Would it make sense to open Spring without any parks open to support it. I can't see enough locals going to the overpriced Springs when money is tight. And I don't see any reason that I would visit WDW if the parks were all closed and all I could do was go to Springs. To me Springs would likely be one of the last to open because it isn't a major attraction it is just a way to siphon off guests that have tired of the parks and willing to shop.
Springs needs tourists proportionately even more than the parks; locals will not support that huge setup....
If you think that they are doing things like Paddlefish, T Rex, STK55 or pulling a 5th Dimension and going up, up in the air in a beautiful balloon in any meaningful number, think again.
What locals will do is walk it, hang out some, take a coffee at Starbucks, bite into a $10 Blaze Pizza, tap a happy hour at Raglan or queue up for a concert at House of Blues
Probably more likely that a local would buy something in the parks than at DS...?