I got that itch too, don't get me wrong, and i don't even like what I'm typing, but my observation is on the state of the whole GPU market. My personal preference doesn't come into it, just my opinion that in the last couple of years the market is saying there is no mainstream demand for 4K yet, same with high end VR. Add in DRAM under supply and the bloody crypto miners who accounted for around 20% of GPU revenue last year and It really looks like the next gen of cards has no real incentive to use its limited resources to make massive performance leaps to enable everyone to get 4K gaming @60 fps. So, imo, a 1080ti is likely still going to be up at the top end of those game fps benchmark charts we all see well into 2020, with maybe just one or two new cards beating it by any significant margin (including AMD's next offering).
I'm just blurting out what I see and am interested in others views. Back when the 10 series was due to come out, i was saying complete opposite with the advent of VR and that pascal die shrink.
(P.S. I'll be getting whatever Nvidia release by the end of the year, assuming its under a grand!)