Although koontz's suggestion has some merit, I agree with Flapcake on not adding a 'ferry' region along the sea routes. They tend to be neglected because they aren't part of any bonus, and/or used as barriers, when the idea of a sea route is to add a border. At the very least they can produce a 'soft' barrier where an open border is desired.
However, there would be one big benefit to adding two non-neutral (open deployment) regions- it would increase the starting regions to a better (might I say even ideal) number. For 1v1 and 3-player games, each player would start with 19 regions instead of 18, and in 4-player games each would have 14 instead of 13. As it stands, 18 starting regions for 1v1 and 3-player games is obviously not good, but I find it acceptable if Flapcake wishes to keep the region count where it is. It is something that I think you should at least consider, though, given the benefit.
That said, in lieu of any other feedback, I present this fine map with a mark of gameplay sufficiency- Bampf!
This of course does not mean that all gameplay discussion shall cease, but rather that the focus has moved on to graphics now that the gameplay has met or exceeded the Foundry standard.
Congratulations, Flapcake!
Now get those graphics touched up and let's see this puppy move onward and upward.
-- Marshal Ney
P.S. Flapcake the 1st Post is very nice, well detailed but the breakdown of starting regions is wrong for 2-player games. In 2-player games, one-third of the regions are automatically neutral. Thus, the starting regions for 2-player games is the same as that for 3-player games.