Thanks Longzoom. I probably owe a follow-up - in case of any interest.
I decided to get the Z7 despite the "surplus pixels" etc. - I couldn't resist the base iso 64 and IQ being close/similar to the D850 sensor. I really like the colors, tones and the flexibility of the files and great shadow recovery.
Along with the Z7 I got the Z 24-70/4 and Z 50/1.8 - I've also borrowed a Z 35/1.8 which I'm not keeping because the 24-70/4 at 35mm performs really great for my use. It made more sense to me to keep the 50/1.8.
As for the camera body I was a bit skeptical at first but after some use the ergonomics and handling of the camera feels really great in my hands and I prefer the larger camera body compared to my smaller Fuji's.
I get far more keepers than I expected based on the concerns about high pixel count and handheld shooting technique - down to 1/15 handheld at around 35mm and at 24mm I sometimes also get away with 1/8. Apparently my shooting technique is not totally corrupted ;-) .. the truth is that the stabilization in the Z7 seems very effective which is a big advantage with the high pixel count and also a big advantage that it allows me to shoot at base iso more than I anticipated.
A few lessons learned:
- With the 24-70/4: if the zoom lens is not extracted after power-on, a warning screen is displayed and seems to keep the camera running and drain the battery. I hadn't turned off the power (usually not a major problem with my other cameras) and after a 10 km bike ride I picked the camera out of my camera bag - the warning screen was still on and the camera was really hot (made me a bit concerned..) and the battery was almost drained.
- Shutter type: unless you need a specific shutter type, then set the shutter type to Auto. I wasn't able to get keepers at 1/80 even at 24mm but knew it could be shutter shock - when I switched to EFCS it was fine. When set to Auto, my understanding is that EFCS is used at 1/250 and below.