This game has a lot of fun mechanics, but is hampered by its rougelike basis. It would benefit from interesting level design, and a solid campaign, instead of going for replayability (the game isn't complex enough to really warrant that). Also, the ending is really unsatisfying. It frustrates any sort of feeling of accomplishment, and doesn't even have the saving grace of being unique. Same plot that's been done thousands of times.
This game is great—fantastic combination of tactics and logistics. Balancing production, happiness, and military is difficult and rewarding. Only problem is the micromanagement. When growing wheat, you have to make small adjustments to the number of people growing grain in each territory in each turn, or else you get wasted labour or an insufficient harvest. Why not just have a button that allows you to do the minimum required work to harvest the entire crop? It'd save so much time.