I know this is out of the box, but have you thought of starting a group of your own?
Kind of a "We don't know but are willing to share and support" sort of thing. It wouldn't have to be large in numbers but a good core would help support each other . Basing it on information/ideas exchange and mutual support of each others builds. Then add folks as time go on.
Who knows? you just might answer a need that the LHS owners are not aware of.
Regardless good luck.