I'd love to see another Sly Cooper game to finally get the taste of Thieves in Time out of my mouth.
I'd love a soft reboot where you play as Sly and Carmelita's son, who discovers his heritage, rebels against his parents and builds his own Cooper Gang. Sly has to bail him out at the end of each chapter, accidentally teaching him the core moves from the Thevius Racoonus by example. Each time Sly gets closer and closer to blowing his cover before he finally has to reveal the truth and sacrifice himself to save Carmelita and their son one last time, having reconciled his double life and realized that the police alone can't solve the problems he used to solve for them. And that his son ought to follow in his footsteps. As a result, Sly's son takes up the name Sly Cooper IV. Hence the name of the game.