About experience being useful. Pit two armies of a hundred units against each other, everything has base attack and defense 10. Now, make the other side experience lvl 3, being 13at, 13def. I'd guess it'd be a massacre
I seem to remember (back before Dom 2) being told that there was experience for a kill equal to the Size of the victim. I'm not sure if I was misinformed, or if KO changed that at some point, or forgot about it when posting.