This is a hard bargain. I've tried three times in two days - forming the Netherlands - twice as Gelderland and once as Friesland. It's hard because the Emperor (Austria) and Burgundy are two very cumbersome neighbours. And twice Austria inherited Burgundy (with its southern half going to France). The HRE members are pretty touchy about the human player annexing another HRE state and once you do get from a one province minor to a two or three provinces minor, you can be sure that the Hansa or Munster will declare war on you and that the chances are high that Austria / Burgundy will join in the fray because they constantly warn you...
And I'm trying in Ironman mode, so I don't cheat / reload.
And I'm trying in Ironman mode, so I don't cheat / reload.