i was wondering if this mod could perhaps introduce progressively larger unit sizes as the units advance in both time and technology in order to reflect the dramatic increase in army sizes in the periond, especially as tactics transitioned to pike and shot formations...
basically, lower tech units, as befitting their earlier place in the timeline would have smaller unit sizes than higher tech ones, this would also allow you to maintain a more standard stat sytem for the units as they would not need to have stats tweaked up enourmously in order to defeat lower tech units, it would be simple numbers.
while this might sound boring, it would allow units of similar tech levels to interact as they should on a tactical level, while ensuring that lower tech units are phased out progressively due to their inability to stand up against high tech units.
why did army sizes increase you might ask? simple, higher populations, and weapons (like the musket etc) that can be used effectively with minimal training, allowing generals to expand the sizes of their armies.