I think it would be quite useful. You, Alicorn, and Jasen (off the top of my head) know a lot more than you realize about doing this. If you created a common sense guide for this with some tips on how to schedule, how to find people, and how things have run in your experience, you could really lower the barriers to new meetups forming.

I'm planning to encourage SIAI volunteers to start these groups in new areas and it would be helpful to be able to link them to a guide that explains what I want them to actually be doing since "Start a Less Wrong Meetup" is a pretty opaque request if you've never been to one yourself (a position most new organizers will find themselves in).