Hard to know what will be collectable 3 or more decades from now. With the range of really good carbon fiber guitars being made currently, I wouldn't be surprised if some of these make that list. Since no carbon fiber guitars are being made in huge quantities, the scarcity may help the future demand. I have to think that the Savoy (made with e-koa) and any of the Emerald woodies (each unique) stand out.
I can't imagine I'll be around to find out, and no grandkids to pass any of my current "collection" to. So, I guess I will just enjoy them all now.