I think you have hit the main points Dave, and the comments from Gip and Courtney are right on too.
If one is so fortunate to have a mom & pop LHS handy, having your kids start a relationship with them is a great way to build on all these good things.
My kids benefitted from that, and they are still modelling through their teen years.
A friend and I got tired of all the local complaining about kids having nothing to do, and we started a RC plane club, learn to build over the winter and fly in the summer. We got some free meeting space from the community and support from the hobby shops in the form of price breaks, and in the spring we hooked up about 6 kids with the local RC club and got them in the air. Now we are searching for our own flying field so we can expand.
Most of the kids brought a parent along, and the builds turned into a great parent/son activity as well. If anyone else want sto stand up and try to make a difference just let me know and I'll try to help as best I can from where I am.
Bruce