I like that earlier guy's ideas about africa. Some of the other ones are a bit daft.
To me everything looks good, although I might say you should consider creating some future states as possible empires for balance purposes? I would argue breaking russia apart by creating poland lithuania(
http://en.wikipedia.org/wiki/File:Polish-Lithuanian_Commonwealth_(orthographic_projection).svg) I would argue in favor of Poland-Lithuania Instead of Jagiellon mostly because it allows a larger Balkan/Hungarian empire to form and doesnt hurt the HRE as bad (keeping Bohemia within that framework)
You could consider an A Hungarian Empire with Hungary, Romania and Croatia, and then giving Lotheringen and Burgundy to a sort of "Francia" as an empire. I kind of like making the crowns of italy and sicily as the "Roman Empire" 'cause it'd be fun to play as a resurgent Rome. The issue of course with this it eats a pretty big chunk out of the HRE. Could be worth it though
Either way, excellent mod and I've really been wanting empire titles everywhere so nice work mate. I look forward to seeing what you do with it.