Axes are missing a number of generic options available to Swords/Lances, primarily being Firesweep, but one becoming more noticeable now is the lack of defensive stance weapons; both Sword and Lance have 2 generic defensive stance weapons each (Safeguard+, Barrier Blade+, Berkut's Lance+, Vanguard+) while Axes have zero of this kind.
In recent events, Haar could easily have been given the Axe equivalent of Safeguard+ as something more interesting than another Brave Axe.
Why do you think IS has avoided these weapon types for Axes?
