Yeah, looking into it now the set up for Hammerfell after Skyrim is extremely obvious. Hammerfell was the only human region that had not fallen to the Thalmor at that point so there was clearly set up for a conflict even in Skyrim.
Like, fuck Talos, that is an utter betrayal of the empire's people and far more damning proof that Titus Mede was a worthless coward...but it is barely glossed over at all because of Talos.