How do you then discuss balance without discussing other careers?
How exactly does he not require dodging or kiting? He has low CD, but there is no way for him to just stand on the spot and spam it to kill a boss. Any career can kill current implementation of bosses quite fast, what makes GK such an outlier in your opinion?
And yeah, stagger is imho the most valuable part of his ult against a boss but stagger isn’t unique to him so why is he the outlier for ledging and not for example BW who can stagger twice with one ult or FK who has stagger and has low CD?