Hesitate to use the "strategy" forum, but seems to be the best fit. How about a "possibilities" forum or something like that?
Anyway, here's a wild idea.
Set a date for an online meeting and make sure as many folks as are available can join. Adjust the date and time as needed. Point is to get participation. Between now and the meeting time, either no new posts except reminders or discussions about the gathering.
In other words, focus all the energy of the group into gathering together and getting as many folks that signed up to join in the meeting.
Make the meeting process very powerful. Create a structure that has an effect, that will allow something to move forward, that will produce change in the existing group.
No worries if it doesn't sound fun or useful. Feel free to shoot it down!