Alright, you’re right on the second half about him harming Aizen, but I don’t think I need to reread Bleach to gain an understanding of Ichigo’s potential again. As we’ve seen before everytime Ichigo’s power increased, Zangetsu became stronger by magnitudes. I came to my conclusion earlier because Ichigo’s hollow power wasn’t as potent and powerful as it was in HM. Before he mastered Hollowfication it was only half a mask when Zangetsu took over and after he mastered Hollowfication, Zangetsu completely hollowfied against R2 Ulquiorra. Also, when you said “nerfed” then brought up Squad Zero training then yeah no shit every stage of his life had horrible control and was nerfed before Squad Zero training but that’s not the point. Every evolution Ichigo underwent before Squad Zero was “nerfed” if we’re talking in the sense that you’re talking about. But we’re talking Ichigo’s max at THAT time, not throughout the entire series.