Sorry about some of the vague points.
"quests seem very rare"
When I'm asking Lords for quests at a feast for example, most of the time not one of them has a quest. If it were native I would have got maybe 4 quests from that at least. Maybe there is some way the mod changes the world that lowers quest chance, I'm not sure. They say something like "There are some some errands I could have done, but a man of vassalage like you is not worthy of chores."
"burning villages doesn't lower your reputation with the faction properly"
I'd like to re-phrase this by saying it does work properly, but only like 1 in every 5 villages massacred. The reputation drops/gains are very inconsistent and most of the time when looting there isn't much consequence.
"forcing supplies from peasants forces you to go to the plunder options menu"
Are you sure it's not a bug? I can't get that window where it says "the peasants grudgingly bring supplies", and I wish it did, so I wouldn't have to plunder the town and get even less reputation. It forces me to plunder each time.
"if you are hostile with the army of light, wilhelm will try to attack you but does not initiate a battle, so you will be spammed until you find a place to stay. this also often crashes your game."
I do have 1.5.4 but it still happens, apparently others are still getting it too.
"blank text window after greet message from npcs"
When I greet a Lord for example, they will say something like "Ah, hello again Draulius", but after skipping that the next text window is blank. But if I skip that too I can talk to them normally. It's just an extra click. Not a major issue, but it's there.
I'd also like to bring up two new problems I have:
1. I think Heroic Health regenerates too fast, and I can literally go into battle naked and not worry too much about taking damage. I feel like there is no point in heavy armor with it on. I know I can turn it off, but it shouldn't be as good as it is even when it's turned on.
2. Razor's Edge. As much as I like the design for this place, every time I'm there dozens of enemies (usually Remnants) fall down into the water and live. Then it's my army shooting into the water for 20 minutes, and I am forced to retreat. I don't know if it's possible, but the water should just instantly kill you. It's easy to 'dodge' and survive the fall damage.