Objective:  To have warmonger players make some hard choices during conquest by adding a new feature for conquered cities but only if a particular trait was selected on game creation.

Proposal:   Add a new sovereign trait or kingdom/empire trait that will give conquered cities vision and intelligence to the originally conquered founder and owner.  Some citizens will remain loyal to the first master and supply the sovereign with information.  The warmonger must choose to use the city at the price of giving intel to the enemy or raze it.

Reason:     One of the reasons 4x grinds get boring is because choices become limited, narrow and one dimensional as the players advantages become greater.  In war adding hard decisions that last should help make the journey to victory more interesting.  In the end the player reflects and feels good about himself that they made the right choices.  Also players have been asking for an espionage system and this fits that mold to a lesser degree.  The trait will serve for players who desire a strategic advantage offensive or defensively.

Example:   Let's say there was a NATIONALIST trait with the purpose of any city you lose to an enemy player will still provide you vision and information of that city.  A definite advantage for him if he plans to retake it.  Now the warmonger player knows this and may choose to raze it instead.

Wrap up:   A minor suggestion but worthy of interest.  Players want espionage and this would be a lot easier to add than a full blown system.