Just read something from the M&B II Bannerlord blog and this caught my attention: "Weapons, armor, clothes and architecture should date from around 600 to 1100 AD, rather than the 13th century."
So it would seem that after Bannerlord it would more easier for people to make mods for this era like our Vikingr. Ofc the detail isn't the same if you would just copy-paste things from native, but it would be a easier start for some modders who are interested of the era.