As a kid I went from NES to N64, not knowing there was a generation in between. That was pretty cool. I think there have still been a handful of "wow" moments in graphics for me still in recent years. It's not so much things looking more detailed, but things looking more alive and fluid. Hair is looking really cool in games these days. Wet things look really wet. Real time global illumination strategies look damn cool, and imo, more impressive in non realistic environments. But I think in general the biggest improvements in graphical immersion yet to come will be less in terms of graphical improvements and more in environmental physics and small details that "happen" when previously they would not have happened.
A lot of high end tech is becoming more accessible, and I think because of this, will also become more modular. I'm excited for it.