After playing 10 WOC campaigns ( modded most of the time) I realized since as a mechanic diplomacy is not part of their of style they need a substitute mechanic. Something else to do in between razing a gazillion settlements. I love the horde campaign play by the way.
I remember in lore chaos gods are heavily involved in their everchosens’ life. So why not a god interaction mechanic where you get missions to gain favour of particular gods. The rewards will be lord buffs and items such as unique weapons and armours. The buffs will be permanent since it’s bestowed upon you.
However gaining favour with a particular god angers the others so you have to deal with an opposing chaos god aligned army or armies coming at you. This could be extended upon norsca’s God alignment mechanic. More than 3 levels of bars though like 5 or something.
To:dr it would be awesome to have a mechanic where you do favours for gods with missions given to you and you get permanent lord buffs and unique items such as armours and weapons. Doing favours for one god will anger the rest and there will be chaos god aligned armies sent to kill you.
Sorry for the wall of text