I think having a specific migration group would also be likely to improve the visibility of pg, and the idea of migrating to pg. As it help pg to appear in more search results.
I presently have qualms retaining novice, sql, performance, and probably some others. I don't think adding yet another specialized low-volume list is of particular benefit. Nor do I think it behooves the core project to be in the center of migration support anyway.
This discussion can and should be moved to -general