Looks fun! Hope youi had a nice time!
Thanks, it was fun. The truth is I wanted Nakamura-san signed my Rhythm Thief too but the rule says only one item could be signed so Sonic it is.
Also in QA session Hoshino-san said that he wanted to do a spin-off game revolving around Robotnik family but it wasn't approved (yet?).
From Nakamura-san he said he wanted a game about Silver the Hedgehog (and of course Sonic Adventure 3),
while Shigihara-san talked about the history of Shadow.
Including how he was inspired by Kabuki motive, Sujikuma, which means strong and brave, and how his moves was inspired from speed skate.