Even though I too think that this proposal has realistically not many chances to be implemented in the game, the thread is not shut down yet.
Albeit being certainly able to close it, I always tended to lock topics that really needed to be locked due to their evident
conceptual inconsistency, or because they were previously rejected by the Edain Team many times (for example: Mirkwood as an independent faction, Arnor playable with the switching mechanism of the Dwarven factions, characters and heroes from the First Age or different timelines,...).
In this case, I believe that all the considerations made above (including mine) are indeed valuable and provide solid facts for a rejection; but they are still suggestions of ours, and not official statements, nor is the proposal itself (although raising various problematics) so manifestly impossible.
Therefore, I think that we should wait for a response by the Edain Team, to give a definitive answer to this.
Regardless of that, I want to briefly address Witch-king of Angmar, if I can give him an advice
It's not really that yours or other past and future proposals are 'unfair', or that we are solely focused, on the forum, on discussing bugs or gameplay/balance issues; it's not really so strict, otherwise the very MU would be a bit lifeless, I guess.
As pretty much everyone rightly referred to, there are various aspects, from gameplay/balance to the lore and other conceptual themes, which must inevitably be kept in mind everytime you want to give a valuable suggestion and hope it will be implemented; because the Edain Mod is always a work-in-progress and quite voluble project, but it's also true that its high standards are based on the solid
Harmony (and consequent boundaries) I was relating to above, among all the fundamental pillars of the Mod itself (graphics, lore, balance, gameplay,...).
I'm sure that everyone has great and very creative ideas, but if you really want to come up with something really useful, you should really take into consideration those quite defined general borders, though difficult it could initially seem to.
Obviously, this is not something innate and compulsory from the beginning, but more a kind of
general awareness that everyone has somehow achieved through the attendance of the forum and of this great Community.
I believe that you will easily get used to this approach as many of us did, if you really want to meaningfully contribute to the improvement of the Edain Mod