As someone who has written C and C++ for 35 years and Rust for a decade now, the last five years professionally, I don't see the point.

Even when I need what C does "well" from the author's pov I can just wrap my code in a big unsafe {} in Rust.

I still get a bunch of things from the language that are not safety- but ergonomics-related and that I would't want to miss anymore.