Kobayashi is really an enigma, and sometimes I wonder if he is not another collective pseudonym like Satoshi Nakamoto. Call him an international man of mystery.
I don't see anything exceptional about him. Bankruptcy proceedings are always v e r y s l o w things. From the papers given out at the recent meeting, he has done quite a bit of work actually. The basic idea may seem simple (collect the remaining assets, collect claims, etc.) but there are lots of details that do not show up in the report. For instance, MtGOX used several banks through its life, had branches and dealings in other countries, etc.. Also, a bankruptcy case was opened against MtGOX in the US, and it was not long ago that the US judge finally recognized the precedence of the Japanese courts.
Furthermore, Kobayashi had to learn enough about bitcoin to avoid mistakes that could cost him millions in lawsuits. We don't know whether those 220'000 BTC were really "lost and found", but the episode suggests that MtGOX's accounting must be a frightening mess. I bet that Kobayashi still hasn't decided how he will handle the claims -- hence the postponement.