My favorite dynasty to play in CK2, by a rather considerable margin, were the Zunbils. Not only did they provide an interesting challenge by being sandwiched between the most terrifying tag on the map on one side (the Abbasids) and a fairly monolithic, and thus prone to cooperation, culture on the other (India, who in my experience tended to band together with all but their biggest rivals when someone came knocking on their doorstep), but they gave the experience of being one of the few truly unique (albeit not particularly fleshed out) groups on the map.
I loved the experience of taking this small, isolated, beleaguered group and turning them into a superpower by slowly chipping away at my neighbors until I could hold my own in proper wars. No real allies, usually no places to fall back to if a war went wrong, just a straight "make or break" reshaping of history.
I know it's incredibly early in CK3's development and we've only had the bare minimum of reveals so far, but I hope there will be some interesting little isolates in the hinterlands of the world that provide a similar experience to the Zunists.
I loved the experience of taking this small, isolated, beleaguered group and turning them into a superpower by slowly chipping away at my neighbors until I could hold my own in proper wars. No real allies, usually no places to fall back to if a war went wrong, just a straight "make or break" reshaping of history.
I know it's incredibly early in CK3's development and we've only had the bare minimum of reveals so far, but I hope there will be some interesting little isolates in the hinterlands of the world that provide a similar experience to the Zunists.