I really enjoyed this map when I played it. One of the best fan created maps I've ever seen. Just a few things I noticed that I would like to see changed.
I played the map with KryPtik, and I agree with everything he posted. I have one more bug to add, which really only effects the Attacker.
The War Paint upgrade for the Mumakil doesn't seem to do anything. You can not upgrade the Mumakil, nor do they come out with the War Paint once the upgrade is purchased. My suggestion would be remove War Paint as an upgrade, to make and Harad or Rhun unit come out with Upgrades one you use Influence of Sauron on a tribute camp, assuming this is possible. If not, allowing the War Paint to be purchased on Mumakil is the next best thing.
Now I have some other suggestions, not related to any bugs.
Rhun Riders only cost 40 cp, which is incredibly low. This is not a bug because I remember they cost this much on the Shire map if you capture the inn in the middle as Mordor, but if possible, the cp cost should be increased, maybe to 80 cp because they are slightly worse then Haradrim Lancers.
The Spellbook-Powers Harad Reinforcements and Rhun Reinforcements are incredibly redundant on this map because you can just buy the units on the map, and because of how long it takes for those Spells to recharge. My suggestion here would be to greatly lower the recharge time of these spells. This would also make it so that the Mordor player who doesn't have the Evil Men camp to have a decent amount of Evil Men in their army.
Now I don't know what you can do about this one, but Grond being locked behind a 10 point Spellbook power on a map like this doesn't seem right. Is there a way we can just buy Grond, or make it that he Spawns after 10 minutes of play? I would really love to attack the Gates of Minas Tirith with Grond, but this is near impossible because of how late you have to get him (do I call Grond Him? Or should I use It? I don't know
).
I do agree with making the Walls of Minas Tirith invincible, but with this change I would also like to see Siege Towers getting a boost in Armor, because they die very fast from what I remember, and that would really force the Attacker to just attack the gate.
I would also like to see the Command Point limit removed from the attackers. Not much else I can say about that.
One last thing. I don't know if this is a bug or not, but for the Player that starts with the Orcs Tents and Troll cages, one Troll cage starts at level 1, and the other at level 3. I think that both should Start at level 3.
That's it for now. I really look forward to playing this again, maybe coming up with some new ideas along the way. This map is incredible, and I would love to see it improved.
Keep up the good work.