constantinople
not Istanbul
We really need a second Swedish civ, Scandinavia is really large. The Baltics are, too, which is why I think the Teutonic Knights should be included.
I think Denmark, Bohemia, and the Netherlands could spawn earlier- Denmark was united by about 965, and Bohemia became a kingdom in 1212. The Netherlands should spawn in 1581, when they revolted, as what is considered their golden age began before they were officially recognized. I also think the map could be extended south a little bit to include Provence and a bit more of Italy.
I'm assuming Frisia represents Holland as well?
If so, then the Netherlands should probably not spawn if Frisia is still alive.