Good questions. Clear, organized. Please share what you find as you compare existing languages. Regarding (F) -- this is partly about (a) the language's intero

Good questions. Clear, organized. Please share what you find as you compare existing languages. Regarding (F) -- this is partly about (a) the language's interop story and partly about (b) building a community of people that gets along, get things done, and strikes a balance being independent enough to generate something useful and different while being open to compromising for industry adoption (which often means "slowing down" and stabilizing when the time is right). (a) There are a lot of great ways to ease editor integration. One is to build/maintain language server / analyzer. See https://rust-analyzer.github.io https://rust-analyzer.github.io. Another is to share and maintain a formal grammar. (b) I've been very pleased with my interactions in the Rust community in this regard. There are certainly many ingredients to mix in ways that make sense for a particular community. In my view, the key aspects are (i) be clear about what your language community stands for; (ii) strike a balance between fairness, transparency, and privacy in how you get there; (iii) build in accountability and feedback loops