Considering how the water and animations are, I think something helpful would to improve that as much as possible.
But what else?
Boats. Vikings need boats. Transportation seems necessary in a map so large. Difficult to build, yes. But boats... This must be a thing.
Agree? Dunno help support threads that support this idea.
if someone else has brought this up, I apologize. But yes, I'd love to see this become a thing.