A thought just occurred to me: one might conceive of an ATL Netherlands which gains East Frisia, but loses - say - Brabant and Limburg. It could be an alt-Congress of Vienna deal to add East Frisia, and then an alt-Belgian Revolt to lose Brabant and Limburg. Thus we get a smaller Netherlands (which makes people feel they need more land), while still giving the Dutch control over the entire Waddenzee.
That could see your ambitious plans being carried out,
@Achaemenid Rome!