So far the list of where everyone is located is as follows:
PIT
BOS
RDU
ABQ
CHS
SEA
DCA
SFO
AUS
LHR
FRA
YYZ
To keep the momentum and interest going, for all those who haven't posted your location (or is not visbile on your FT handle) I would suggest doing so as it may help for coordinating meeting locations.
With that said, I would recommend having a centralized meetup on a upcoming weekend in May or June (June is pride month after all).
Based on that most people are in the US and on the outer shell of the continent, DEN and FLL do have some good flight deals (not pure MR's) for upcoming weekends that can make for a good first time meeting point (and to get the ball rolling), but I'll leave that up to the OP to decide/facilitate as it was his idea to start this group.
ORDnHKG brought up a good point regarding MR's - most of them are during the middle of the week. That doesn't mean we can't get together, just that we should NOT exclude flights/destinations that are in the 5-10 cpm range since 50% of the fun is meeting other GLBT on FT while still collecting miles