I love statistics. I do not know how much work will go into this from the developers side, but would it ever be considered to have a troop kill/death list?
I remember playing a very old game, Fantasy General, where you could see which troops had the most kills for and against, damage dealt/received.
Also, would it be possible to increase the amount of people who have invaded you while you were offline from 3 to maybe 5 or 10? Pretty please.