Here's some feedback
TitleThis will encompass some other parts of the map as well into my suggestion, but first I just have to say could you choose a plainer title?

In any case, here's what I suggest: You take the flag off the background (which I have to say kinda mars the some of the nice colors on the map), take an imperial font like
Lilith (all caps by the way), put the flag in the background with faded edges, and the 2.0 on a second line. Here's what I came up with:

(Of course in a smaller scale) — You'd take off the edges more (as in more faded out), but just my thinking.
Also, if you'd name it "France II" that'd make it seem much more fitting to what is associated in one's mind with France — the imperial culture and history, etc.
LegendIt has the same fundamental problem most legends without a graphical representation of the area it is about or some sort of marker on the map itself has — the colors just aren't different enough (or in this case, few enough) to differentiate from one another. On this map I'm quickly thinking of two ways to go about it, both keeping the key you have now but adding something on/of the map. My first way is creating a minimap that has abbreviations of the bonuses on it, i.e. Al., Aq., Au., B.-N., etc. This would clear it up as long as you have unique abbreviations. The other way I think of is to stick the same abbreviations in the background of the bonus regions, like MrBenn did on England. I'd prefer the first, however, with the following layout:
TEXT LEGEND: bottom left (where you have it)
MINIMAP: top left, above Bretange
TITLE: top right (more on this area later)
SIG: bottom right (where you have it)
And though having the colors in back of the names is nice, I think it'd be better implemented as a close, sharp glow outside of the names. Now, if you were to implement what I say about the sea below, it'd be apparent things like Centre wouldn't be visible, so instead of putting the odd white box around all the names, creating a new layer consisting of the same fill amount as the names (like done with the bevel I talk about later) and making a white outer glow that stretches further than the colored ones could do the trick. This part is just in my mind though, so you might have to experiment.
Dead AreaWell, if you move the flag out of the background like I suggest, then we have a lot of empty space to work with. I think you should add the rest of Europe, like on the old one, and there place the title. Then, you make a selection of all of the playable area, fill it into a new layer and make the fill opacity 0% while you keep the layer style at 100%. This'll get a nice bevel on top of the whole land.
The next thing about the water would be (in my opinion) to take a nice deep blue, like #304291, and make the land have some outer glow of plain white at low opacity, making the water a nice cyan-blue color near the land. You could also overlay images that represent France (Medieval, Renaissance, whatever) for something to fill the dead space, namely in the bottom right.
Borders & NamesThe black-on-dark isn't really working too well with the borders, so if you'd take the outer glow from the names and put it on the borders they'd be more visible in the dark spots like Centre, P-A-C-d'A, etc. Also, the bold, blocky font you used doesn't really go with "France," so taking a font like Perpetua looks nice from just writing it out on a blank canvas.
Like I said, really good start and I hope you see it through to the end

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