I don’t think you’re aware that there have already been attempts to downsize New England city labels in the past to only include larger cities with metro areas. Because of cases such as Montpelier and Augusta, it will never be accepted.
New England has less of a city inflation problem, and much more of a lack of standardisation problem. I support a standard that comes from an independent, government source, that doesn’t drastically change the map that currently exists.
If you try to limit a state like Vermont to Burlington only, a state like Maine to Portland, Bangor, and Lewiston only, you will never get a large enough consensus to implement those changes, at least if you to expect them to last more than a week.