I have to say, that this is the best mod, if not the best GAME, that I have ever played.
That said, I just finished a war of the ring with Gondor vs Isengard, and was amazed that you were able to eliminate crashes in war of the ring. There were a few bugs, however, that you probably have noticed, but I am going to point them out anyway, if you haven't.
When a hero dies, it is impossible to revive him. Luckily, the four main heroes just re-spawn in the living world map. The other heroes do not, so if they die, they are gone forever.
Pippin is not even recruitible from the living world fortress. He is there, but unselectable. Gandalf and Beregrond were selectable, but when Gandalf died, he was then unselectable, like Pippin.
Another problem (just with real time battles) is this: You cannot recruit and revive heroes.
Therefore I suggest that, like in BFME1, the small outposts with three build plots also recruit heroes. Not only would this partly resolve the problem in war of the ring, it could lead to interesting types of battles in skirmish, that were there in BFME1, where players only begin with the possibility of making three buildings, and the only chance they have of survival is to conquer other parts of the map. I hope this is possible to mod into the game(if you even decide you want to mod it into the game).