I agree with the concept but the name is terrible. "Core team" gives one the impression that this is the most important team to the project. It's not! It could be called the "governance facilitator" team or admins or something.
Please name the next iteration something less spicy.
There was an architecture team which existed, I would assume the usage of "core" was to disambiguate.
https://github.com/nixpkgs-architecture