I wouldn't say VR is a gimmick, it's on another level of immersion that you can't experience on a TV. Thing is I find VR a limited one, more akin to a fair ground ride, it's good for a few hours but then the experience wears off. I sold mine as I just couldn't be bothered to wear it anymore plus I prefer 4k with HDR. I also couldn't handle horror games well...
Back on topic, raytracing is going to bring a new level of realism to games and that I includes VR, I'm excited to see how devs use it in horror games. They could do some really mind bending effects with it using shadows and reflections.
I'd imagine in time games will have a more organic look to them if that makes sense ?