I'm glad to see that there's some interest.
As far as a refresher course, I certainly understand a desire for one, especially since it's been about 1.5 years since I've last "been wet". Usually I just do it at the dive location with the divemaster on-staff before I begin my journeys. I've found that most vacation destinations do not find this to be an unusual request.
I guess I was initally thinking something a little closer to home, like the Caribbean (includes east coast of Mexico, Caymans, Virgin Is....), Mexican Riviera, or Central America (Belize, Honduras, etc.). But if there's enough interest, I've always wanted to dive the Red Sea, so that would be of personal interest to me. Frankly, I'll go almost anywhere. Micronesia has always had a lure, Fiji, back to the Great Barrier Reef, Hawai'i's less-dived regions, et al.
Most FlyerTalk DOs seem to be only a day/night, or a weekend. This would likely have to last at least several days, if nothing else than for decompression concerns. Is it even realistic to think that any significant number of people could find a chunk of time where they would all be free to go? Personally, I can't do much until August. Any suggestions about possible timeframes or length of the DO?
If you know any other FT divers, put some feelers out if you could to gain more interest. Thanks!