@AssassinShadow

I've toyed with the idea of helping out the Danes, by making Viking Huscarles their king's unit, just like the Swiss have SAP as their king's unit. And making Viking Huscarles buildable in all ages, or at least in early and high, and then switching to Late RK's in late (just like Turks have Ghulams in early and high and Sipahis of the Porte in late). You could also reduce upkeep for Huscarles. That might help them, as a stack with 7-8 Viking Huscarles would probably beat most opposition unless highly outnumbered. I haven't tried it, but I think it would be quite easy to mod.
I have been thinking about changing the king's unit for some other factions as well, such as Polish Retainers for the Poles, but for now I find Viking Huscarles for the Danes the most plausible.
Just a thought.

Marquis de Said