Not sure if it’s actually feasible today, but in the future when all the Internet routing and consumer devices are compliant, something something ipv6 has enough address space for every device many times over to have a unique address. I’m guessing there’s still too many links in the chain that won’t be setup for ipv6 to work, but it’s worth your research.

Probably more realistic to work out the complication you’re concerned about with reverse proxy and a VPS + VPN.