I think some limits were prudent. DVC was only given limited preview slots. Without this limitation, any member living within 100 miles of WDW could drive up to attend. That would have created even greater competition.
Unless I'm misinterpreting, seems like people are saying that the WDW schedule has folks scheduled to work the New Fantasyland attractions pretty much every day from now on. During preview events it will only be open to the specific audience, but other days "soft" openings are likely. Sounds like folks who missed out on the scheduled preview events still have a good shot at getting in. Twitter is a good resource...a number of Disney bloggers are posting when it's open.