Was just reading a book and thinking to myself about soldiers in a squad. They all have the same armour and weapons but eventually some of these will break to wear, use and simple bad luck. While your different squads be they swordsman, spearmen, or archers when they fight any enemy squad and win will there be spoils after the battle. Not just gold but weapons weather they be a higher quality or the same maybe even lower. Will they santch them up to use as there own weapons if they break.
This adds a whole dynamic to the game, tactics, and battles but wouldn't it be neat if your squad was using plain iron weapons overcame a squad with steel weapons and took the good ones to use as there own. Eventually through tactics or magic or what have you to become a squad with mixed armour and weapons giving advantages and disadvantages to warfare.
Just an idea but it would add a whole new lvl of gameplay so instead of developing good weaps you could concentrate or build shabbier versions and recruiting than go out and with sheer numbers win the day and beter equipment. Gets complicated you would need lots of peasents to recruit from and infrastucture to recruit from but it would be a whole new way of playing. I think the same can be said of magic. Research lots of really powerful spells and use tham to fight your battles or research lots of advanced weaponry and use that to fight you battles.
Just an idea but one I like. If not for this game it would be neat to see implemented in the future.