Its kinda tricky. Radio isn't exactly for everyone, but homebrew, kits, programming etc, could yield a wider net, and have radio be included. It would at least expose it as an additional avenue of interest to kids already interested in homebrew electronics, because, in all honesty, trying to interest kids by simply making the argument that you can use radio to talk all over the world doesn't raise the eyebrows now in the age of cell phones and internet. Not trying to disuade you, but maybe give you some ideas or at least a perspective. I definitely do see a resurgence of the builder/maker mentality. Especially now with affordable microcontroller systems, modules, 3d printing etc. Being smart and tech savvy isn't a "uncool" thing any more. As for my kids, I expose them to it, and they have a passing interest, but I don't force it on them. They are usually glad to help be with stuff, but I double any of them would be interested in getting their license, and thats ok.