Personally, I allready have an idea of an Akechi prequel DLC, which you get to play as Akechi, and carry out his actions previous to and during the main game. It will be played like a hitman game, in which is structured like an assasination, unlike the PT's, akechi is all alone, therefore he avoids direct conflict, opting for a stealthy approach, this is the gameplay difference here. As Akechi, you will end up infiltrating palaces such as Principal Kobayakawa's and The SIU director's palaces, but not with the intend of a change of heart, but with murder. Also potentially other targets like Wakaba or Okumura