Okay, let me enlighten you with an expansion related dream myself.
Basically, I dreamt I pulled an expansion box from an alternate dimension where it was already released and rifled through the handbook (yeah, like this was the year 2000). I remember there being some great new feature about empire building that also somewhat reworked loyalty. Also, 5 new leaders and at least 5 new civs (...I never got to turn that page to see if there were more).
I remember new alt leaders for England, France, Russia and Japan. However, some were shared so I think the alt leader for England also was one for Russia (which doesnt make any sense?) and France also was shared with something. I dont Remember the remaining ones.
New civs I remember were Portugal, Carthago, Kievan Rus and Ottomans. The only leader I actually remember by name and has the strongest memory whatsoever was Henry the Navigator for Portugal. He also was on the cover of the whole thing and kinda the poster child.
Of all this, I gonna only stick with Henry the Navigator.
Oh, I almost forgot. Another of the alt leaders was Bismarck.
This was a rather eurocentric expansion dream.
Edit: I just remembered, the English alt leader might have been Alfred the Great, though now him being shared with Russia makes even less sense.
