I put it to the board: unanimously rejected, but with favourable mention.

Spoiler #2: I also suggest a 0th criterion for determining the closeness metric over worlds, that it is of highest importance to preserve the world-making structure of external relations.

Spoiler: I suggest that Global Symmetries are not laws or even lawlike (not a theorem of any system) but rather a consequence of the world-making structure of external relations.