Add mechanisms to ensure that when conquering a title of Duke during a war, you remain under your Liege and not transfer to the former Duke's Liege. The same transfer mechanism under peaceful annexation via inheritance should happen when the title is transfered by peace treaty - especially when you end up vassal of the Liege you're at war against.
For example, as it is currently:
- Count of A is vassal of B
- Duke of C is vassal of D
- Count of A is at war with C and D
- A conquers C
- A becomes vassal of D while being a war with D.
Instead, it should be:
- Count of A is vassal of B
- Duke of C is vassal of D
- Count of A is at war with C and D
- A conquers C
- A remains vassal of B as Duke of C, which is at war with D.
B) Gift events during Realm Duress periods, to simulate that Lieges try to bribe the loyalties of his vassals.
C) Add probabilities of declaration of war so that it becomes possible that a realm may have the choice not to declare war, especially when caught in wars against half her vassals.
D) Real private wars.
