As described here, what if it's just a PS4 that runs the same games but in better quality? I've just revisited a couple of old games on PS3 - From Dust and Sacred Citadels. If I could play those in 1080p60 with nice AA, I'd be well up for that.
I can see it now... The Last of Us: The Remastered Edition from the remastered edition. See Joel tears as they were meant to be... in 4K!
Let me stop, I'll probably pick it up again...