Right, Holland is treated as an already vanquished non-playable ally, like France. On that note, French territories after Paris falls should be treated in the same way, at least the UK could grab some extra income in West Africa, Madagascar & Syria. Would also encourage Germany to take Normandy.
I guess the implication of ‘activating’ friendly neutrals is having to wait for them to fully mobilize. Also not sure why you’d need a combat unit, why can’t an AAA do it? It has a built in support staff and troops.