RT is a mistake for these consoles, costs too much for little gains. Very much like shadows with Doom3 and Fear or several AA solutions it will eventually get somewhere, but now it is barely viable on a 4090. Any other visual evolution was nice but also hardly noticeable compared with the frontrunners running not even on Pro but on the PS4 amateur. 60 fps is great though. Just is not advertisable on screenshots. Trying to wow with graphics just doesn't work anymore. Also tech demos years before any game coming close don't help either.
I'd even guess that physics improved a bit, but also hardly noticeable.
What we really lack are games that astonish with feeling like new genres, or just a new stab at something that failed before, ie maybe even possible on past gen(s) but nobody thought of it, or it needed the technical progress to finally make more sense, be more presentable. We had QTE games and or Telltale games and I think Detroit is the most polished one so far, with actual choices and diverging paths after very linear Walking Dead and questionably written Fahrenheit. Twin stick shooters were a rather small new thing (Geometry Wars of course, but also Dead Nation and Alienation, but are just gone?) We also got some walking simulators that were imho impressive, eg What remains of Edith Finch. Also the Battle Royale mode became a genre and alongside with it GaaS whatever that even is supposed to entail. This gen seemingly nothing happened other than short loading times and smooth framerates???
Current gen is arguably better than ever, but just stale (also due to AAA going towards risk free approaches sometimes missing customer tastes by a mile by doing so, so utterly failing) and lacking innovation which should be possible on a much befier CPU than Cell and Jaguar were.