Hmm, I think acquiring Hanataro fits more into Step 9. He shows up around the time of the low/mid level boss fights ( between Ikkaku & Renji iirc) and I intended him to be included in the "enemies are not all in lockstep" step description. I guess Nell's vomit could be serving that role too, but to be a true copy there would have to be someone on the inside among the Numeros who turncoats and starts them helping out. Nell and Co. were already outsiders, just like Ganju and his sister.