Medieval maps would kick ass, bring EU4 to CoW
It would be good for RP too, since you'd be the only one ruling over your country and that would fit with the fact that your country is a kingdom, + war everywhere just like in the middle ages
Can't wait to join as France and kick England's ass
Idc if the tech doesn't fit the era, the mere ability to play as an old times kingdom would be sick
But while we're at it, I'd be more than happy to see the dev team work on medieval units and rework game mechanics for some middle ages events
Here, this for example (1444 AD) :