My PS3 gave up the ghost recently so I'm considering buying a PS5/Pro in large part just to have a Blu-Ray player, but also to have something for GTA 6.
What are some recommendations for PS5 games or even PS4 games that have backwards compatibility that I should consider getting? I'm mainly looking for console exclusives as I have a gaming PC so anything that plays better with keyboard/mouse I would just pick up on Steam.
Bloodborne is top notch and will seemingly never come to PC no matter how much gamers portbeg. It's a PS4 game stuck at 1080p30 with piss poor frame pacing but is tied with Elden Ring for my game of the century. Just awesome level design, atmosphere, and some truly epic bossfights, though you must get the The Old Hunters DLC since the three best bossfights in the game are in it.
Demon's Souls Remake is outstanding. Not as great as Bloodborne but it's far superior graphically and runs better too. Bossfights aren't as good as the rest of the Soulsborne games but the level design is top notch.
Most of the great PS4 and PS5 exclusives have either come to PC, have officially announced PC ports, or are no-brainers to get PC ports. Eg for former exclusives that have already been ported to PC consider games like Persona 5 Royal, Yakuza 0, Ghost of Tsushima, Uncharted 4, Horizon Zero Dawn, Horizon Forbidden West, The Last of Us Part I, God of War 2018, Final Fantasy VII Remake, Spiderman, Spiderman Miles Morales, and Ratchet & Clank Rift Apart. For games announced but not yet out on PC consider God of War Ragnarok and Final Fantasy XVI. And then games like The Last of Us Part II and Spiderman 2 that will unquestionably get PC ports but haven't been officially announced AFAIK. Though none of them are mouse & keyboard games IMO. The real benefit to having the console if you like Playstation franchises is to play them at launch instead of waiting 2-3 years for PC ports.