right now its too easy to war decc someone's whose revolting and basically take half of an entire kingdom (with scattered blobs here and there) without the main king being able to fight back effectively
itd be accurate if the original kingdom could make peace with the revolt after the aggressor occupies one holding which currently disallows you to make peace until theres nothing occupiedI understand that it's a little gamey, but it's actually pretty historically accurate(though more common would be assisting the revolt & and then peacefully vassalizing them afterwords), so I would keep it the way it is.
It worked better when they could only pick off individual counties/duchies that were revolting from their king. It's a little problematic now, I agree.
either allow making peace peace even after holdings are occupied by outsiders or disallow the stronger CB's (invasion for example) being used on revolters