Persona 1 had Tamaki from If, Persona 2 duology had Kyougi Kuzunoha possessing that detective dude and running the Kuzunoha Detective Agency and spreading rumors for the party, Persona 3 I forgot if it had anything but I do remember Trish on tv talk about what the previous Persona casts were doing around that time, and the english version of Persona 4 had Chie mention Raidou Kuzunoha as a detective show while the japanese version was some other detective reference.
Did Persona 5 have anything? Other than the dlc.
Also I would really like Gouto and Morgana to have a meeting. Two talking magical black cats in 1 place is a thing I want and for randomness add in Schrödinger from Digital Devil Saga idk anymore haha XD
;-; I just really want another Devil Summoner game.