First of all, thank you Azog for having expressed your proposals
As others have rightly and already written here, the Misty Mountains faction is still in the development phase, needing definitely more attention than Rivendell, because it's arguably the most particular faction compared to the other ones; we should thus really wait for more detailed and specific news, I guess, because I feel that there will be important changes for the Goblins as well, as also the other factions were concretely modified from the initial plan.
Nevertheless, it's also legitimate discussing about it if there are suggestions that one might think that they would fit well in the Edain Mod.
So, I want to make some considerations about what you have suggested, accordingly to the official information we have had so far.
1. Technically, Azog doesn't exist in the Edain Mod
It's true that the Defiler's design is entirely fashioned from the Azog of AUJ, but Azog, as a character, died in the battle of Azanulbizar and he's thus excluded from the timeline of the faction, set during the events of the Hobbit.
This precisely means that, currently, there is 'only' the Defiler, who will also be characterised by a hunter-like nature, which obviously defines both his status in his faction and his abilities, and not the one of a general.
2. I don't totally agree with removing Dol Guldur as well.
The fortress entirely belongs to Sauron (and consequently Mordor), and it's always been deeply connected to the powers of its Master so that its very integrity and magical (negative) nature depend solely on Sauron (and we understand clearly, then, why it was necessary the Magic of Galadriel to tear down the fortress, and not 'just' the action of a regular army).
Sauron hid himself for centuries in Dol Guldur, and this caused the progressive corruption of a large portion of the already enormous Mirkwood.
When the Fellowship is escorted to Lothlórien by Haldir, Tolkien clearly describes how everything around Dol Guldur had become tainted and dead, withering due to the evil emanation from that fortress.
Therefore, yes, Minas Morgul is iconically known for its link to magical poison, but Dol Guldur too is characterised by a strong 'poisonous nature', which directly derives from Sauron himself and not by the Witch-king.
3. This matter has been debated a lot both here and on ModDB within the Edain Community.
What people's desires are related to, according to the discussion and polls, is the will of having the Evil Men available as a faction themselves, as it should legitimately be.
The implementation of the Evil Men via the spellbook is currently meant to symbolise how the Evil Men came in aid for Mordor as allies from far regions, and that they never entirely belonged to the Dark Lord, primarily because their malice and evilness are profoundly different from the Orcs' or the other foul creatures'.
Therefore, if the Evil Men will really have much more space, it had better be within a faction of their own, in my opinion.
Anyway, this is the thread I was talking about regarding them; you are more than welcome if you want to join it
http://forum.modding-union.com/index.php/topic,32416.msg424817.html#msg4248174. It's not that Mordor has a lot of units in a very confused ensemble.
It must be that way for gameplay and conceptual reasons.
Mordor can't upgrade in most of the cases its units with armours or forged blades.
That's why it needs a wide range of different units/heroes with different features and abilities (mainly with negative effects).
Also because having huge armies on its control is exactly one of Mordor's dreadful aspects in the lore.
Eventually, apart from these themes, I don't think that everything must necessarily remain this way.
I too expressed my desire of having more concepts from the Hobbit trilogy implemented in the faction, especially a more similar model of Smaug than the current one (which still resembles him in his general traits).
Just, as Fredius wrote, the Misty Mountains are still a bit of a mystery, and we don't know yet what kind of new plans and changes the Edain Team could opt for in the future