The little things can add a lot
Simple little hammering of rock when clicking the stone mine. Or fla quick fighting clip sound. iPod games like origional gankster does a great job adding the element with out it being too much or annoying. It's better than playing in silance all the time. Just to hear a little something in te background.
Also I would love to see a profile page for a town. Where one can describe themselfs. Who they're allied with etc... Others can threaten or egg people on. That's the fun of a war game. Why keep it in just privet messages?
Thanks!