I see you've gone with "nope, not this year" and I'm trying not to give up too....
The current "fun" with travel has my wife and I wondering that. Some places aren't open, don't know when they will be open, or how well they'll do. We definitely aren't getting back to the States this year for a Christmas at home with y family, and taking the two 1 year old boys on 15 hour flights, plus a connection. Her home in Turkey is still looking sketchy this far out with the kiddos. We've been debating a trip for somewhere that would be like 1 day diving, 2 beach/ chill days and back. Kids optional on that "long weekend."
If I was in the States, Baja/ Socorro would be tempting. Currenly we're seeing some maaaajor deals on Maldives including bookings anytime through all of next year and the southern Maldives sound decent or Christmas and the current deals are fully refundable for any reason. If I could, I'd get to Chuuk/Truk Lagoon in December, I would in a heartbeat buuuut the travel connections are insane and that'll be a two week trip (and I need a little more tech time, and maybe a lottery ticket for a rebreather system.). We're living in Qatar, so direct flights to Egypt are still out politically and the connections take forever or are very expensive. Thailand can be interesting, as can Myanmar... but I was looking at pre-twins liveaboards that leave Thailand to go there... Though I did see a few liveaboards leaving India for the Andaman sea, which would be cool. Likewise, a liveaboard for Sipadan would be on my "wish list" to get to for Decemberish, with the addition of hammerheads into the normal mix of cool stuff.
In the end, we may very well bounce for a long weekend over to Oman, they have some interesting spots and apparently the plankton blooms draw whale sharks through there in December so hey...
I've been browsing Belize as a retirement place after here, and after seeing the Book of Face groups the last few months, I'm reconsidering that for sure.