[@Blackbeard]
Well that was more so for the Zanjutsu, Hakuda, etc Since captains get three masteries for them and pretty much could easily have all the skills instantly. Yet for the Zanpakuto we would need shikai skills and bankai skills so things aren't just spammed Getsuga Tenshou style. Its so none of us can create a really incredibly strong attack and just keep using it. Know what I mean?