When it comes to the Battle for Middle-earth games, I am the maker of the Easterling faction for each one. That said, I have made extensive amounts of undeniable progress towards this end goal.
This is my Easterling Fortress in Age of the Ring, for which my Sub-mod expands the Easterling presence in Mordor into a whole other side of it, a Sub-faction if you will. The upgrades will all be different as will the heroes, even the builder unit is distinct.
In the sense that, rather than being able to put out fires, he can repair structures, siege engines, and naval ships.