[GateKeeper]

Is the resort "sold out"? Keep in mind that the developer was only involved in the resort until all the "time" was sold, and the assets become fully dispursed amongst all the timeshare owners. A managment company then is enlisted for its services to manage and maintain the resort (and why you pay a maintenance fee). This managment company may or may not have anything to do with the developer.
Your situation does not sound promising. There should be some way to find out what insurance, if any, was carried on the resort (property and land), and follow that trail. Without insurance, it seems a stretch that anyone other than the current timeshare owners would have an interest in rebuilding. I would contact the management company, who you send your maintenance checks to, and find out what policies were in place. As a minimum, if there is any payment from any government agencies, this money should be split proportionately between the current owners.