Not sure about the others, but there's already events dealing with Ting-Meets. Don't know if they were added with the Northern Lords DLC or were always in the game, but Ting Meet events happen...
And what's the point this Cultural Tradition, since this seems to be a Scandinavian culture focus, and they already GET Scandinavian Elective (unless that's going to change).
Also, again, what's the point of having Popular Opinion (anything above 0 is ALMOST useless, even less useful than the useless Clan Vassal alliances). Having 0 Popular Opinion or 200 popular opinion does nothing but increase your vote power in the said Scandinavian Election. But, even assuming your liege HAS that, Development Growth also works.
So this Tradition looks like a lot of flavor, but right now, that's all it is. I guess it would be like spices. Some are necessary sure, but one can't live on spice alone. You need something actually substantive. Where's the meat and the vegetables?