Last night watching the Travel Channel show on the Disney World holiday lights made me think that Orlando might be a nice place for a SMOFcon. Early December is often the low occupancy (and low park attendance) time -- or so I've read somewhere -- down there, so there might be rooms and function space available for the traditional first weekend in December. One of the Disney hotels, if they have appropriate function space and corkage policies, might be ideal and let people extend a day or two to play around the parks. Obviously this would have to be sometime after 2012 since other years are already getting staked out.
Depending on how Westercon works out this July, I still think that Las Vegas might work for a early to mid August Worldcon. There are plenty of choices for convention space (IIRC the Luxor, and probably others have almost enough on their own) and hotel rooms in walking distance wouldn't be a problem for any strip location, and possibly not for the convention center. The issues would be, as usual, corkage and possibly explaining to the hotel that fen might not gamble, but will consume mass quantities of inexpensive good food. This would have to be sufficiently after the San Diego bid to work with a similar group of not-quite in town con runners. If I recall the last LV bid for worldcon died due to lack of local support before it really got going.
Another site that might work, but I know less about it, is Vancouver. It would have to be far enough after both Montreal and Seattle since it would have the combined image of a Canadian bid and a Pacific Northwest bid. Even without that, I suspect that any bid would have to wait until after the Olympics in 2010, but that is automatic given my other suggestions.
Another Orlando Worldcon might not be out of the question. But given the choice between Orlando for SMOFcon or Worldcon, I'd prefer SMOFcon.
Were I to move back to my home town, I might be talked into doing a SMOFcon bid for Albuquerque, but I don't think I could do it remotely, nor without the support -- or at least endorsement -- of the local fan groups.