I would very much like some depth regarding mercs! Perhaps in an DLC or if they are so kind in some patch.
It would be nice if the certain merc bands grew in size as time goes on (i know that the great and white companies are a bit bigger when you start in 1337 but still not big enough) and some others are replaced by bigger companies later on.
At the moment the merc companies are very important and game deciding early on but this rapidly decreases when the larger countries unite. It is weird that gamewise as time passes mercs lose their importance while historically it was the other way around, atleast in western and middle europe.