It looks like chapters 8 and 16 (at least) obliquely refer to those ideas. Perhaps if there are specific topics you think would be useful, you could open an is

It looks like chapters 8 and 16 (at least) obliquely refer to those ideas. Perhaps if there are specific topics you think would be useful, you could open an issue or a PR? That being said, it looks to me like the main concern here is surfacing Rust specifics, rather than general performance concerns.