Wow. I had no idea you guys were working on mesh incorporation into pfSense until just now. Good job guys!
I've been set back about 3-4 months on doing mesh here, but it'll be forthcoming. Hopefully I can contribute on this front as well. There have been some very interesting developments coming out of cuwireless.net, but I don't recall which of the mesh protocols they've been using, but I DO know they've been tweaking the routing protocol itself and have a city-wide mesh going already. I'll need to bookmark this thread and come back to it later after I've had a chance to speak with Sascha over there a bit further.