My recent work involving EnTT is still under NDA, though at least one of the projects should have a public announcement sometime next year.

With that said, if there is interest, I'd enjoy building a clean room compiler for an existing language using EnTT and other techniques I've developed over the years. Thoughts? While I absolutely adore TinyCC, it might be worthwhile giving that space another go?

Well, I don't think I've enough skills on this and I'd follow the project eagerly to learn something new, so I'd go with what you feel confident and/or you like! My thoughts are that such a project would be of interest for tons of people though, I'd willingly share it as much as possible. :)