Right, but seriously we’d need to have a discussion about what your environment can support. If you’re not interested in hosting something official, any such leaderboard will be unofficial and I can make it in whatever I feel like hosting myself. If you’re interested in hosting something, we’d need to talk about what your web hosting can conveniently support and I’d need to target that environment. I have a feeling you won’t be hosting any WCF services on IIS, which would make this super easy for me but is probably a needlessly expensive web hosting bill for you.
Edit: or if we could have some interested community members say they’re willing to run IIS in VMs . . . well, work has been trying to shape us into full-stack engineer types so I have a tiny bit of experience with Chef, Vagrant, Docker, and AWS EC2. I am NOT a proper ops person so I guarantee, left to do this all myself, I would make several critical mistakes that will lead to the whole thing falling over. We could run an haproxy node on EC2 and point it at various volunteer community machines (people who are willing to leave computers on most of the time) – so at least when it falls over, nobody’s risking a machine they care about if it’s a security failure.