running wireguard and reverse proxies is not that arcane... but i did extend a reverse proxy a little to add proper CORS-enabled NIP-05 https://mleku.net/lerproxy and i use https://github.com/angristan/wireguard-install to set up the wireguard connection
making a service like i describe would be a full time month's work to develop, i might pencil it in for august, i have a good feeling that bitcoin will do the 100k thing sometime around there so i'll be without great need of momentary employment, and then i might be able to actually make enough money off this, by running a decently sizable infrastructure...
or maybe i can even get funding to build it, because running good infra like this with an open source tooling and documentation for others to run various sized offerings with teh same base would be interesting to freedom tech promoters like jack
i think probably better to just build it and prove the concept, if it makes me enough money to live off then it will just catch on i guess