>>714792690 (OP)Literal decade's worth of experience and material to use as a base, to craft THE love letter title to both old fans and the newcomers to celebrate the franchise's tenth anniversary.
The story taking place in the distant past allowed them to shed off excess weight the series had gathered along the years (re-occuring characters and tropes), all while allowing them to do a bit more serious yakuza-mafioso tale.
The two playable characters also balances the campaign perfectly, creating a branching mystery that slowly connects in the end.