Calgacus said:
Anyways, German is not going to be broken up. May people, though, seem agreed that Dutch is too unhistorical. So, we have three options as far as I see:
1) Replacing Dutch with Frisian: Frisians can be justified because their language is classified outside the German system
2) Replacing the Dutch with Flemish: Flemish can be justified because they are listed separately from "Germans" in medieval sources (Frisians usually are).
3) Keeping Dutch
Giving all the provinces with dutch culture in 1066 Flemish culture is wrong. The people in Holland, West-Friesland, Frisia, Ost-Friesland, Gelre, Breda, Loon, Brabant Lieger weren't Flemish, people of Flanders were called Flemish. It would be the same as giving all the Gaelic cultures the name Welsh or all the Scandinavian the name Swedish.
You can either have this setup
1. Flemish culture
Brugge, Gent, Ypres, Boulogne, Guines, Artois
2. Frisian culture
Zeeland, Holland, West-Friesland, Frisia, Ost-Friesland, Oldenburg
3. German culture
Sticht, Gelre, Breda, Brabant, Liege, Luxemburg
If there aren't enough tags you can give the Frisian culture provinces the German culture.