I have succeeded in making hotseat work in Wrath of the Norsemen, at the sad expense of all the campaign scripts. I may upload this version of the mod if anyone wants to play hotseat games.
This was one thing i liked better in The Last Kingdom, suddenly things went more interesting.
Of course some of the scripts do work in a hotseat. But as i don't have the will or time to remove scripts at chance, i decided to remove every and all scripts for the hotseat campaign. So there will be two versions. One can always add in scripts now when it is working, and test the campaign until it stops working- and then fix it by removing the script.