Sounds like fun! Would love to hear more about it.
It's a bit of browsing/reading (600+ pages), but you may also want to take a look at my Rhineland saga session recaps (100+ sessions). I'm not outright using the Muspelli (yet 
), but faeries based on the old norse/germanic pantheon, and we're (slowly) moving towards "that kinda plot" over years. The signs are there if you're familiar with source and want to look, I can't spoil much more openly in case players read. Just this week they came over a very interesting clue you probably could use outright but it's in #111 which is not yet in the doc (I'll get around to translating it in days/weeks).
The tribunal of 1221 has some politics, but the 1227 quite a bit more (and better chronicled, admittedly. starting session #96). There is also a ton of politics in-between, and most letters and handouts ooze with them throughout (how most politics are setup, probably a few you can borrow almost straight off to throw some fun curveballs - it's how I've used them. "Legendary Dragons" for example has built in plot hooks for them to get more interested in scandinavia, including finding Beowulfs legendary sword). Feel free to ask me q's if you find anything interesting.
Some other ideas:
- House Criamon (or some bonkers people from another House) could be secretly involved or cooperating and really complicate things. After all, they both want a similar/same thing (or just run that Dies plot by side :).
- Overall it's likely that the order is split on if the norse even are a real problem or not. Too many will just want to use any event for own gains, prestige or as a way to heckle their rivals.
- You could use the semi-canon events of establishing Heorot on Zealand. Basically a "screw you" to Oculus. Others will certainly be on that. The covenant then being raided/razed can lead to loss of face and more politics (or vice-versa if successful ofc).
- Novgorod could also have claims or cause political, as originally the north was "agreed as theirs".
- Remember in politics, as soon as one faction "attacks" someone for something, there is a risk that others join the fray (on either side). Assistance (open or covert) can come from previous enemies, just because the attacking faction is "more of an enemy". Others will not care about young Tyro shenanigans.
- Bjornaer (really archmage Urgen) might want to REALLY help, as they hate the Danes for invading Rugen and the conservatives of the south blocking any reaction. It can also be used in reverse ofc, they might help the other side because of this against the order.
etc etc..
I hope some of that helps. Cheers.