I had this idea last night of creating a transparent and completely open source vpn service. It would have all the source code available to review online for the backend, vpn box configuration, audit log of reboots, signed binaries, reproducible builds, etc. It would run as transparently as possible. It also opens up the platform to be steered by customer needs via issue tracking, PRs, etc.
How interested would you be in such a service? Would you be willing to pay a slight premium over blackbox VPN services?