Branching Strategy: Should I create my PR for main or for a specific RFC?

[thomas-k-cameron]

I'm trying to create a PR for RFC30 (serialization and de-serialization).

I want to create several small PRs instead of a one big one. Should I create a PR for main or for some other branch?
If so, which branch?

related: #1944 (comment)

[Velfi]

Please target PRs to main. Since your feature won't break anything if it's implemented piece-by-piece, that'll be fine. If you add Rust code that you don't want customers to start interacting with, consider marking it as #[doc(hidden)] until it's ready.