The PS5 is already a very powerful piece of hardware that most devs aren’t making full use of. I honestly can’t see any justification in a hardware upgrade other than some Sony execs thinking it’ll be the end of the world if they don’t put out something new to make some profit line continue to go up.
Not a game I’ve seen mentioned much, but I would recommend Whiplash if you like dark humor and 3D platformer action games.