So, tomorrow then?
~
Trying to act as a cooler here...
It's a cool observation about the larger Z lenses being very large. Ideally Nikon would produce both compact and optically less compromised offerings on similar specs but that's a far cry in today's markets.
The results of GFX100s might be quite something but I can bet the camera is not as fluent in operation as the small-format offerings. What I have understood from the reviews, the autofocus will be on the level of X100 series because of the general G lens design philosophy.
But speaking of reviews and reading between the lines. Early reviews of Fuji GFX cameras always pitted them against state-of-the-art FF cameras because that's what it was compared against. But nowadays there are several GFX cameras so the comparisons are mostly made against previous GFX models. What used to be sluggish and slow a few years ago may now be fast and responsive, but compared to a fast FF camera such as Z6, perhaps nothing has actually changed much.
The 50 Hz EVF panel hasn't received attention after the camera was released. Maybe people don't notice a thing but in any case it's not the same as 60 Hz EVF or faster.
Your storage requirements will be massive with those 100 MP files, each around 100 megabytes. More will be demanded of your computer.
I won't touch the lenses at all because it's such a matter of taste, nor do I have any first hand experience on Z or GF lenses.