Time to expand the Upper Coasts region to more than 10%.
Give it more of NH, ME, and the Monterey, CA area.
I'd split the Upper Coasts as well. Other than their support of national Democrats, there is quite a bit of political difference between a Boston resident and their Seattle counterpart. I don't easily picture the local Boston pols I watched run in the West. The national candidates will by nature do better at expressing a common message in a wide range of regions.
I can see Seattle's Jim McDermott in Boston...I also see the links between VT/ME progressivism and NW progressivism... Boston and parts of RI, in many ways, deserve separation from New England suburbs and need to be linked with urban ethnic voters in NY...