I've been wonderin this for a verry long thyme...what would happen if one of the strongest soul reaper, kenpachi zaraki actually knew his zanpakuto's name and can actually activate his bankai! In my opinion there might be a possibility that his zanpakuto is always in it's shikai form, similar to Ichigo's zanpakuto,Zangetsu.If he actualy knew his zanpakuto name he will bring everybody down and the whole series would end. 😃