Pangur Bán
Deconstructed
You have missed my point entirely, which was that the political continuum between Athelstan and Elizabeth makes the comparison with Denmark and Sweden invalid. You may think of a title like "rex Anglorum" (vel sim.) a matter of insignificant semantics, but it is not - it is the difference between a society/civ/nation/etc. evolving, and one signalling a break from its predecessor. The title is every bit as important (and, in many cases, more so) than the territory being ruled. As for Scandinavia being a single cultural region, I and several others have made the argument already that the Denmark and Sweden civs clearly represent not only distinct political entities, but also different time periods and civilizations. The point is that both of these factors are very important.
Finally, you say that I am wrong on many points, but your post does not back this up - you say that political boundaries between Denmark and Sweden have been fluid for a long time, but I never claimed otherwise. Similarly, you bring up Athelstan's ruling of the English Saxon Kingdom and part of Northumbria, but entirely miss my point that the title of "rex Anglorum" that he took is one that was kept by future monarchs down to Elizabeth, indicating a political continuity that is very significant in distinguishing between evolving countries and new, distinct entities.
Rex Anglorum is one of many and by no means most significant of the titles used by Athelstan, others were "English Saxon king", "King of all Britian" and "Emperor of all Britain". His kingdom was not the English kingdom ruled by Elizabeth however, as Norhtumbria was not merged into the Wessex-Merica union until after Eadred's reign. Athelstan illustrates exactly why titles don't matter that much.
Your other point expresses a view antithetical to this game. The differences between GA's Scandinavia and those of HB are exactly those you'd expect between any nation over the same period. This is a game stretching 6000+ years, and civs would be supposed to change over the period. If you are selecting new civs from the same culture just because a particular polity flourishes a few centuries later, then you make a joke of the game (of course Byzantium and Rome already do this).