Back in March, BIDA  went to twice a month, adding 1st Sundays in
addition to 3rds. These are pretty much all contras, but we also do
occasional special events in different styles. I've heard from various
dancers, though, who want more special events. We'd like to do more,
too. Practically, with the way we currently organize them, we're just
not going to be able to have them more frequently because the overhead
of a stand-alone event is too much.
So, we're considering keeping our 3rd Sundays as a monthly contra
dance series and making 1st Sundays be a "special events series". This
would be things like techno-contra (Spark in the Dark), english,
ceilidh, old time squares, scottish, swing, unusual formation
contraish dances, family dance, international, kerry/irish, lots of
Many of these would probably have some contras mixed in, and we had an
english-contra dance we had a while ago that went well, but the more
forms you want to mix in an evening the fewer bands and callers are up
for it. We also might do these in partnership with other
organizations, looking for a larger audience and trying to help
dancers of both groups find other dance styles they might enjoy.
Have other groups tried things like this? Would a pattern like "3rd
Sundays are contras, 1st Sundays anything goes" be too much for people
to remember?  Would it hurt our community, because people who have
come to expect one thing from BIDA (contras) would come to 1st Sundays
expecting that and be disappointed?
 I suspect anything more complex than "every Sunday" means people
mostly rely on announcements.
[*] I posted an earlier version of this on my blog: