Isn't 3 already of ps4/5?Yeah I know its a pain in the dog to port these games. But they should dedicate a team to porting their library and having it run natively on PS4 and PS5.
But i would take a port of the gow collection currently stuck on ps3. I'd take a lot of simple ports of games stuck on ps3. That should be the priorty for justifying ps premium.