Distribute spoils of war by war contribution - a CK2 adaption

[Seelensturm]

It is a common strategy to preserve your army when called into an ally's war because you can't expect to gain anything out of it. This means you accept the call to arms but do nothing but defend your own territory.
On the contrary human players exploit the happily committing AI allies in their own wars without rewarding the AI for the help.

To at least lessen this problem I suggest to adapt the war contribution system of CK2. If you are not familiar with it:
http://www.ckiiwiki.com/War_contribution
Prestige and gold spoils of war would be distributed between all war participants based on their war contribution. This might need a slight rework of individual war score in a way that battle war score does not solely apply for the war leader but is split based on number of men killed or similar.

 

[PsysmicSound]

It's funny that this is being received as a new idea. If I recall correctly, EU1 and EU2 had something like this.

 

[Canute VII]

Note, please, that an ally having a core on a common enemy's province, should always be granted its cored province once the player (or another AI) as war leader demands to cede a province. First the player demands one province, simultaneously also the ally would be granted its core. That means, war score has to be at least sufficiently high to yield the ceding of two provinces by the enemy. This logic would also apply to the third province demanded and so on until ally has no more cores, at which point the player would be free to ask for what ever additional spoils still granted by the war score. With two allies, for every province the player demands, (s)he would potentially have to demand two additional provinces for the allies (provided allies have cores on the enemies provinces). War leaders would not be able to demand provinces cored by an ally for themselves even if they've got a core themselves. Effects: 1. players must choose their allies wisely and whether they want to call them into the war or accept a call, 2. Alliance war leaders would be disincentivised to demand provinces instead of other more diplomatic spoils, 3. The exploit ("common strategy") would be partially fixed, the interest of war leader and allies would be more aligned.