It's nice (though the mountains... ). The only fantasy setting that I can recall off-hand with specifically a setting centered on a fantastic Holy Roman Empire was... by an author called Kate Elliott, so, fairly original (compared to all those Britains out there, oy vey, those Britains!). Needs more Finnic and Uralic tribes, though. Or are those the Witch Tribes?

EDIT:

The Lyrish Kingdom? *groan* xD