Display MoreWar drums sound fine, but War economy doesn't seem catchy to me.
If you look at it closely, it's not a huge boost, but it should be more than enough. Can't the developers do something about the cap'd damage then?
Maybe have the cap'd damage change when you have the boost so that it doesn't affect players who do not have the boost? I think it's not such a big deal implementing these kinds of changes.
Any huge size of infantry battalion has 12 attack damage +50% does quite a lot. Those are right now features to represent battlefield size. If the cap is removed then it becomes pure battle of the numbers. If the cap remain even with bonus then the bonus is useless so I do think 50% is huge