
Originally Posted by
JorisofHolland
I just got an idea:
What if you can take control of other factions through marriage. Only as long as your lineage is ruling, you are allowed to rule them. When you marry a princess to a Heir, you can see him on your family tree. You don't take control when he becomes king, but rather when his son becomes King. If you take a look at the family tree every now and then you'll see when he dies (you also get a message when a king dies, I believe, so you don't even have to watch the family tree.
To have this work you need to play hotseat, but it's possible to defend in hotseat, so there's no problem there.