The insane power has not.
The "real" infinite attempts has not.
Up until, what? 2004? Almost everyone could 1 hit AS people.
Up until then, most wars were in Towers or Street PvP, as you say it.
Now, there's BS and duels but Fixers still have six or so too many things to throw; there is literally no class in the game that can beat a Fixer, on a Fixer's terms; if there were a giant flat plain and the Fixer had perfect timing, there is literally nothing to stop them. Even an NT will just get AlphaMeeped.