Good survey I just completed it and I have some other comments.
The IPIP mesh is not plug and play, which for folks like me who are interested in learning routing has been an invaluable learning exercise. I hope something like this can always continue.
However there are other use cases that are more plug and play. One being supporting internet connected infrastructure (ie. IRLP, Allstar, DMR, D-Star etc). All of which mostly require a public IPV4 address and the ability to port forward. Such is not the case with cellular providers and will only become more of an issue as the global pool IPv4 addresses shrinks. A system of geographic POP’s should be deployed. The POP’s might want to use OpenVPN as it's well supported and issues automated keys or the ARRL LoTW method. It would be wise to limit the bandwidth to something modest and employ a DPI technique to drop bittorrent fingerprints to ease overall administration.
Short of ARDC supporting POP’s, then you’re looking at outside groups making this happen. But these will likely be service specific. Ex, I believe IRLP has done so with some assigned address space.
Current geographic portal allocations are based on CIDR style routing. Which makes sense if you intend to interact with existing (legacy) RF networks. Perhaps a portal question should exist to point them to their geographic allocation or not. If the intent is non RF or mesh, then a different allocation methodology should be employed (next chunk in sequence)
I’ll stress again knowing who is doing what is always good so one can privately coordinate forwarding partners, etc, and just folks to experiment with.
Steve, KB9MWR