They won't do it, as they hate anything more than a minimal testing matrix, but it would be nice if, when the Intel versions of the system frameworks are fully removed, Rosetta 2 could be updated to include them as a downloadable component, so we could keep easy Intel support for those that really need it. It sounds like they're going to do something similar for games, where you can download a version of Rosetta 2 specifically created for them, but it would be nice to make them available for any app.

Docker still relies on Rosetta 2 on some parts, I wonder how it will go on that front

https://docs.docker.com/desktop/setup/install/mac-install/

While the documentation doesn't really dig on the issue, I remember it was needed for x86 emulation (if you're trying an older image of MySQL for instance), so I guess other platform emulation will be significantly harder from now on for Apple Silicon ?

Rosetta 2 is pretty important for running amd64 containers on Mac. Removing it will be a big disadvantage. Why take something that works well and throw it away with no alternative?