I'm having a lot of fun with my Norsca campaign, and it's also... challenging in some ways. For really interesting reasons.
1. Norsca units just ooze with personality. There's so many little things that make you love commanding their troops. I've mentioned some before, but another one is I think they're the only faction in game right now where the units do marching chants when you're zoomed out. So it sounds really muffled but so awesome. It really sounds like an army on the march in the distance.
2. I actually lost my capital. Twice. And I didn't give a shit. Norsca is almost a horde faction, and their settlements are so terrible you really don't care about them. They don't even have walls and holy crap their garrisons are so terrible. I lost my capital the first time to another Norscan faction who I couldn't intercept... so I went "fuck it, he wants my capital? Fine! Take it! But I'm coming to kill you next". The second time was Bretonnia. Those fuckers came out of nowhere to blitz me while I was raiding Middenland.
3. At first I thought it sucks that they only have one generic lord choice. Then I saw the Lord's skill tree. Holy jesus christ that shit is crazy. You guys should check it out.
4. They don't get anything from uniting a province, so feel free to just raze settlements you don't want in Norsca.
5. They have a serious issue with money, in that it's so fleeting. They get tens of thousands of favour from sacking settlements, but they also spend it so fast. It's really challenging to manage that economy, way more so than Chaos.
6. The generic wizard for Norsca is hilarious. He's straight up just a feeble old man. His combat stats are so trash unlike other wizards in the game, who can at least fight a bit in a pinch.
7. They will never, ever have problems with public order. I swear they're the happiest race in the game.
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I doubt Norsca will be much of a threat in the game compared to how they used to be. They will probably spend more time fighting each other than anyone else now, as that's what they did in my game. There's way more factions of them up there. Not to mention they actually need money now, compared to before.