I go in on maine
>Ally burgundy
>Call them in with promise of land
>Dont give them any
Later on use the transfer subjects age bonus to steal Flanders and Holland In 1 war but since 1.30 maybe it's better to try for Inheritance
A more risky approach would be to actually give Burgundy land to keep them as an ally. If the Inheritance comes to you (or to France which will go to you), then it'll cheapen the annexation of France. Burgundy can be inherited by an event, so any land you can give them would be better for you, I think.
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