Well,
First let me preface that I'm having a blast with LH, started the scenario and so far, so good after close to 300 turns (yes I'm a slow player, haha)..
I did notice a few bugs, and I'll naturally post more if I find them:
1) First off... Tax Office Building:
It doesn't seem the bonus of this building is being applied because the display says +4 --> +4... And when I look to see if I have any positive "green" changer stats in my city screen there is none at all.
2)Secondly, this may be related to the scenario since it has to do with Heroes you acquire from Quests (not sure if this is something that can happen in a custom game as i haven't tried that yet)..
But if you a acquire a Hero through a Quest, you get the hero, however, there is a chance that same hero can be a duplicate for another faction too. Luckily, the Hero I got, Jorgan the Great has a duplicate in "New Pariden" as I saw him there when I was looking around, so at least we're part of the same team, but still rather weird.
Speaking of your team in that scenario is the Team AI expansion bugged in the scenario? It seems the Fallen AI is decent, but why are my Kingdom AIs no where near what the Fallen can do when it comes to finding new settlements and try to expand.
300 turn scenario currently Tarth still has it's first city only and only seems to like to put outposts remote places I haven't gobbled out, Capitar in the same boat, only one city.. They both have a Power Faction rating, and this is about 300 turns in, of 12 to 15
and there's still plenty of good spots for them to grab lands.
New Paridan and Gilden are terrible too, but not as worse as those two, they at least have a power rating of around 180, but considering that I'm already hitting 547 with 13 settlements since I seriously have to carry the load for the lackluster team AI, lol, and two Fallen Empires are at 700 and around 420 respectively, I think there's an issue here. So I guess not sure if this is intended or not, but was the AI made passive for some Kingdom Empires? As I think it would truly open the scenario up if your team scenario AI was at least a little aggressive too I think.
Anyhow figured I would mention it, not sure how much of a priority the scenario is in general since most people just play it once and move on, but figured I would throw in my comments just in case it is indeed not working as intended.