Why was Sakurai Takahiro recast in Psycho-Pass 2?
I'm not sure if this has been confirmed, but it's most likely that Takahiro Sakurai enjoyed playing Makishima Shogo in Psycho Pass. With all the praise he got, I think he enjoyed the project (Psycho Pass) so much that he wanted to get back in the action even if it was a role he wouldn't normally take on.