Interesting point, but would you not say that this is more of a Hegelian standpoint. The positing of the absolute individual eventually finds its reason through history in the law of the state, and the self as the governing body is best preserved by the total devotion thereof. Bankai, as such, is the removal of the self from the state by creating the Unhappy Consciousness. Kenpachi thus raises himself to the level of the God-State by maintaining his delimiting to the senkai form. This is why those who follow him do unflinchingly. Because to follow Kenpachi is thus to follow the self and other through mediation.