In my case we have a local mesh network that we'd like to switch to IPv6 using ULA - no more hassle with IP-configuration... would be cool if could do 1:1 VPN with prefix translation but it's hard to get a server with a /48.
For a mostly hobbyist project running your own AS and BGB and having at least some redundancy for VPN services e.g. at least 2 providers looks like it's quite a challenge. The organisation got a /44 for each community but try finding a provider that reasonable cheap and that offers announcing your AS.
I'm just curious because it's definitely not lack of addresses that seems to be limit here.