It's a bit hard to handle things the way they are.
To begin with, the cog, applies a color-coding filter that only shows brown/green and overrides other filtering (the standard map filtering).
We do have other filters there (as I said the old NW shows WV but it's ok) and I think these filters should have their color-coding applied as well (i.e. you select NW and the whole NW dept goes alight and in there the recruiting areas should go green).
I think the default zoom level should go back to unzoom as far as the whole dept involved in the filtering.
Another thing I would like to see is a proper use of hovering-selection-double click on the units. Hovering shouldn't do anything because it goes messy when you move the mouse. You should select the unit and see all the highlighted zones for that unit.
Double clicking on a unit could be used to unzoom back again to the default level (as mentioned above with filtering). I alrdy mentioned I think this screen should work on a state level (because manpower, war supplies and transportation should work on a state level and not national level. That means we should switch from dept to state filtering.
An example of my difficulty is with NY.
When you hit the cog, all goes brown but several green areas. The map doesn't go to the NY area. If I double click on the unit, the zoom goes to Eerie lake, not to NY and since, in order to scroll down the map, I must use the mouse, I almost always enter other units... which takes off the green area from the previous unit. See... it's an interface that does work but it's a bit messy and it can definitely be improved.
The addition of the West means there's more than half map completely unknown (at least to me) and I am totally lost between dept filtering and complete lack of color-coded layers for the state recruiting within those dept filters.