Last Knights is awesome. I played it for one map (I think), and I liked it so much. Very time-consuming though. Heck, if you ever want to play it again: maybe we can team up?
Which reminds me. Supremacy1914 is also a nice game for people that like some WWI-fighting. It's also loosely based on risk, with a large variety of playable nations. However, I just checked the site and it seems the layout completely changed recently... should be fun though