A little idea about dynamic cores.
I agree: a simple switch on/off is not enough. It would be quite ahistorical.
But what about gradual cores? Like...25 years ---> CB province ("This province is MINE!"), ANOTHER 75 years ---> Claim province ("We are the ones that took care of this lands. You have not a right on these"), YET ANOTHER 150 years ---> Core province ("France? I heard something similar from my great-grandma, yes, but this is Italy."). 250 years in all. Aaaand...the process works inversely, too: 150 years ---> Core -> Claim; 75 years ---> Claim -> CB; 25 years ---> CB -> nothing.
This could allow nations to be created before or after their date: of course, you could create a "Roman Empire" in 1500, but it would be the laughingstock of Europe. You'd have to press your claims...as above, it wouldn't be an easy task; but after that, in 1800, few would call the empire "Italy".
I agree: a simple switch on/off is not enough. It would be quite ahistorical.
But what about gradual cores? Like...25 years ---> CB province ("This province is MINE!"), ANOTHER 75 years ---> Claim province ("We are the ones that took care of this lands. You have not a right on these"), YET ANOTHER 150 years ---> Core province ("France? I heard something similar from my great-grandma, yes, but this is Italy."). 250 years in all. Aaaand...the process works inversely, too: 150 years ---> Core -> Claim; 75 years ---> Claim -> CB; 25 years ---> CB -> nothing.
This could allow nations to be created before or after their date: of course, you could create a "Roman Empire" in 1500, but it would be the laughingstock of Europe. You'd have to press your claims...as above, it wouldn't be an easy task; but after that, in 1800, few would call the empire "Italy".