I'll start it off.
As far as my schedule is concerned I am already trying to make room for events that I am unable to attend. (every month I swear I am going to make it to the open source meeting) Maybe this could be an umbrella organization that frames everything that is already going on filling in the gaps when appropriate. If anything is lacking its probably free time (for the organizers of each group) to spend planning each event that is already taking place. Everyone is doing a great job but I am sure there are times when they are struggle because of other commitments.
From what I can tell by the present level of participation across the board we are a very small group of techies. That also means it won't take much to double or triple the size.
Nothing real will happen without corporate sponsors stepping up. Abacus Data Exchange continues to impress me with their sponsorship of Net2Lft.
Ryan LeTulle