Bigger resolution and bigger screen are the way forward.
In 2009, i changed my PC screen from 720p to a 1080p. I remember, I played Batman AA / The Witcher 1, and the change was damn impressive. Once I got 1080p, I never came back. Playing ps3 games in 720p was hurting my eyes (Bayonetta, Darksiders)
Then I got a bigger screen, then a projector. 1080p with 100" screen @ 60fps is now my setup for playing since 2013.
Last week I bought a brand new laptop with a GTX1060, a 15" 4k screen.
I'm playing Batman AA now on my 4k screen and it's like I'm playing another game. Hollow night, Nex Machina, and Xmorph: Defense are damn awesome in 4K.
I don't know when I'll be able to afford a 4k projector, but this is defo gonna be my next purchase...