SCANDINAVIAN / NORDIC PACK - AURORA SKIIES 2.0 - Do you want something like this to sims 4?

Definite Maybe for me.

First off, I love the idea. Especially the Viking related stuff. Would love to see Archery and Leatherworking as skills in the games with the latter having items to unlock in CAS as well as build mode. I would throw in Mead making as a skill just as I would Wine making in a Mediterranean pack (or similar pack) but that is just me. I want those skills and other "craft brewing" skills in the game badly. And honestly, I am certain more stuff could be added on top of what you added here.

Second... the problem: It feel like you've put too much in there for one pack. (Though I am sure most wish all the packs were this much content at once.)
That said, I am specifically thinking too much related to "worlds". They have yet to put both a normal world and destination world or even a normal world and a blank world into the same pack. They've needed to several time over (Hi Sulani, yes I am looking at you. And I haven't forgot you being over there in the corner Get Famous.) The closest they've come is how they sat up Realm of Magic and the "magic realm" isn't editable without cheat codes (nor does it need to be honestly).

I would say perhaps making the an expansion focusing on Scandinavian culture and lore in general and a game pack with the Viking related stuff would be a solution to this but I can already imagine the amount of people on these forums complaining about two packs with related content.