A cool little idea that I had regarding diplomats.

- Give us the ability to "sacrifice" a diplomat near another faction's city to create a permanent "embassy" in that city to that faction. For example, I just build a single diplomat, then traipse him off to another faction's capital. When he's near the capital, I can click on him and select "create embassy". He then disappears (as well as upkeep), and you now have the ability to enter dialog at any time with the other faction through your interface somehow. Diplomats would still be useful for direct work on the campaign map, but being able to talk to another faction without having a diplomat close would be great, such as to make an alliance before you attack, bribe them, etc. Perhaps if you or someone else captures the city that you created the embassy at, then that ability disappears. I kinda dislike this though, I'd prefer for it to stay open somehow. Also now that I think about it, the embassy as a building itself on the build screen isn't a good idea, more as just an abstract idea.