As I first began playing a game against my friend, the first thing I noticed was that it was not possible to play the game with a north-to-south perspective a.k.a. view the game from the position that the Northern player would actually be playing the game from if they were playing in real-life. Granted, there isn't much of a strategical difference in playing out the game this way, it would be a nice feature to have (most games have this feature).
Also, it would be nice to make use of the 3D view by allowing players to rotate the camera around the board. Again, this does not affect the play, but it is another nice feature to have and would give the 3D view a much better feeling of truly having three dimensions.
All in all, though, I love the game so far and can see myself playing it for a long time to come. Thank you for making such an awesome game and making it available for free as well!