War score can't be accomplished for humans, as the data isn't properly initialized for humans. Besides, humans (unlike the AI) are more capable of generating their own theoretical war scores via discussion/observation.
A trade value system for the UI for trade is unlikely. Trade values are not generated for items in a deal until the deal is processed by the AI, which is not done as the item is added to the deal.
Comparisons to other games, even Civ:BE, are not helpful, as we only have the tools and DLL of Civ 5 to work with. The DLL is not 'the whole game,' it is purely the data engine. Interface, netcode, graphical engine, etc. are all locked away.
G