Aule the creator, why are you keeping on insisting so fiercely with this kind of proposals, that, in my opinion (but, I'm sure that many other ones would relate) are neither reasonable nor very conceptual.
I appreciate the fact that you support it with so much 'passion', but, you also have to realise that you can't just simply create several threads about all the random opinions you have in mind, not caring about the boundaries that define this forum, especially if many other people already gently and exhaustively replied to your suggestions.
Thrór and, maybe, other characters might be implemented in the future in the Edain Campaign, even if nothing is certain at the moment.
The system of Arnor is different from what you suggested above, as it truly was a different Kingdom from Gondor, situated in another region and with a specific History, not only defined by the timeline.
What you ask for is 'just' creating older versions of a faction in specific maps according to its own history, which is nonetheless great, if only it could be applied only as a specific feature of Erebor, while the same thing could be instead experimented theoretically with other factions like Mordor, Gondor or Rohan.
I thus think that this discussion doesn't have the right premises to continue, and I consequently lock it.
P.S. Aule the creator, if you remember, I already informed you about the consequences of such a repeated wrong attitude, even if it's mainly due to good intentions, I hope.
If I'm not wrong, this is the third thread of yours that I lock for similar reasons, and I clearly think that it's not a coincidence.
Please, think carefully before opening other similar threads of this kind, simply ignoring what other people already told you.
Rules should always be followed, along with a constructive and reasonable behaviour, otherwise, there are also 'countermeasures' that can legitimately be used to keep order in the forum.
--- LOCKED ---