Aragorn's Reunited Empire: Just a paper dream?

[Bergil]

his Northern lands will be hundreds of miles removed from Minas Tirith and Aragorn's seat of power.

no, it says in he plans to restore Fornost as chief city of the north.

The reason I think that the slaves of Mordor are respectable is because ot the choice of words. "Slaves" implies that they were forced into it, and will probably be thankfull for their freedom.