Excellent, so we'd be looking at a Romano-Persian style empire, it seems? Eagerly hoping that Oriens will win the vote, and looking forward to seeing how you manage, should that be the case.
Also, idly, who rules over Italy? You mentioned Italia, and a Kingdom of Two Italies, but it seems they're separate states. Is the Pope still in Rome? I noticed the Ecumenical Patriarchate is in the Crimea, having been moved from Constantinople somehow. Also, hilarious to see a Frankish Arian kingdom in Scandinavia.
Edit: Unless Italy is still Ildefons Scirii the Apostle, as mentioned in the 'research' link in the first post? I doubt it, though, since he's mentioned as Nicene there.
Edit2: Also, what's in the Tarim Basin, since it's an independent Buddhist statelet? It seems it might be a little interesting.