Return worker thought

[Nelsonius]

Considering civ5's closest thing to slavery/hostages is worker steal, it would be cool to return citizens after hostilities for a small diplo boost. Or if both sides agree to POW exchange you each get a unit lost in battle. Post war relations IRL are wide ranging and could be an interesting (and somewhat simple) game mechanic. At least allow open boarders as a peace condition. I'm almost excited for this game to get old enough for some deeper mods to emerge.

 

[Frossa]

There are tons of very deep mods, although nothing like what you described. Civilization V isn't really a young game either.