I've solely been playing EU4 recently on a Florence - Italy game. Managed to unify Italy around 1526, would've been sooner but Milan were allied to my best buds France so I was unable to take Lombardy. Spent the rest of my time since colonising around central America and supporting my marches in Greece and Catalonia (Mare Nostrum!). I'm fairly powerful right now but I went protestant and the league wars fired and the Catholics ended up winning, I think my end game goal will be to dismantle the HRE and burn Austria to the ground.
Has anyone got Horse Lords for CK2? I thought there needed to be horde mechanics since before they brought in tribal government.