This video again.
Someone did the math and it turned out that what he said was pretty wrong.
Also it was assuming that every single civ would get completely unique sprites, not regional ones!
Plus we literally already have regional skins of Chronicles already that coexist with AoE2 sprites with no issue.
Pretty sure that was a test run for that.
I should remake this thread [poll] Cosmetic DLC with new polls after the DLC releases because we have Elite Unique Unit and Unique Castle skins now.
Even some unique Monasteries.