http://pagekite.net/wiki/Floss/FreedomAndPrivacy/ is what motivates me - PageKite is an attempt to bootstrap a peer-to-peer web where IP addresses don't matter anymore and servers can run literally anywhere, so people can actually self-host content at home without learning all about IP addresses, routers, firewalls, DNS, SSL, ...

I don't know how much bigger that is than your vision, since I can only guess what your vision is. :-) I can guess based on your design, that until now you haven't cared much about people using localtunnel for anything except dev testing.