I don't know if anyone has suggested it, I'm not going to bother trawling through this whole forum for it either, but I have an idea for a mod, based on the 'The Last Kingdom' series, written by Bernard Cornwall.
It's set in the 9th Century, when the Danes began their invasion of England. I think it's a great idea for a mod. I know that there is already a viking style mod, based on the conquering of Great Britain, and I'm sure some elements of that could be incorporated.
I'm not a modder, never had any experience in it, just want to share a few ideas on it.
Few things:
1 - Little to none stone buildings, this is a time when forts/houses/halls were built out of wood etc.
2 - No horses in combat. Horses can be used to help transport troops faster, but they were never used in combat, it was shield wall against shield wall most of the time.
I've got some other ideas, but I cba to post them, especially if it's going to go nowhere.