This is fantastic and I think it aligns perfectly with many of the goals of the language, at least so far as I perceive them. As the blog post says, it's going to be a long, hard road to reach Sealed Rust. But I, for one, believe it's worth it. I hope Ferrous Systems sticks with it.

Also, please let the community know how we can help. Whether that involves writing code, unit tests, or financial contributions with a Patreon-like system. I really want to see this become a reality and a first class citizen of the Rust ecosystem.