I would like to know if there are any proposals for internal file organization, like what to put from top to bottom...

Example: start with pub use declarations, then use, the mod, enums, traits, etc.

I've seen rustfmt has some options like reorder_imports that may impose some partial structure, but I would like a more comprehensive guide/spec...

If there's nothing like that. Can we maybe discuss something that makes sense? 🤔