[Agrajag]

Just a tiny little thing I wish to say, I think you should make all calculation by multiplying.
That is, for a fighting commander, 100 HP and 20 Attack will be much more valuable than two commanaders, one with 20 attack and one with 100 HP.
So the higher your stats, the better your other stats become, because with the improvement of one stat you increase the usability of the other (increasing HP to 100 as an example, will mean that that commander will live ~10 times more than an ordinary commander, thus making all of his abilities much more useful).