I think the word you were seeking, (which was not in your readme), is used often in American football. Instead of "battle wisdom" I suggest "momentum". In American football, momentum is when a big play or two are made by a team that is down, and you can see and feel the fight coming back into them.
So the mod seems pretty well balanced. It has lots of OP stuff, which is how Kael (Derek Paxson) designed his fall from heaven mod for civilization IV. If everybody has OP stuff, is any of it OP? No, it's just more fun.
Trading is frustrating, but I know that is base engine. I think the best system would be everybody in the army trades with the named leader of the army. The named leader trades with the second in the list, or if there is another army, with the named leader of that army. Right now it is so frustrating, and with the level of items and champions in this mod, it takes a slightly annoying design flaw from the original game and magnifies the frustration.
But what is even more confusing is some of the class restrictions. For example, my assassin cant use the "cutpurse friend" double dagger, but IIRC, another assassin could. Also, the shields are a mess. I cant figure out why some warriors and defenders can use some shields, but not others, and it doesn't make any sense. My assassin can use the shield of mirrors and the shield of many fates, but my defender can't.
It might be because my sovereign is "shinobi"?