You say you want simplicity, then you suggest a "nation-level NAT" that includes keeping v4 alive with overlapping allocations in multiple countries, NATing int

You say you want simplicity, then you suggest a "nation-level NAT" that includes keeping v4 alive with overlapping allocations in multiple countries, NATing into v6 to talk to other countries, apparently for a fee that will need to be paid somehow. This is not simple, and is certainly not the most sensible solution. The simple and sensible solution is to just use v6. > The biggest most canally disgusting thing about ipv6 is that it will render dns based ad blocking a thing of the past. This claim is completely nonsensical. DNS-based ad blacklisting works just fine in v6. None of the problems you list with it exist. I suggest you unblock v6 and use it. You'll find it works the same as v4 does, just without the added complexity of NAT.