I just got rid of my Z7ii because the operation is so drastically different. I just kept trying to use the custom buttons I had setup that weren’t possible to do with it and that led me to missing shots. After getting the Z8 I used it primarily as a landscape camera. Once you adjust to being able to customize buttons and different AF modes on buttons it was really difficult for me to adjust back to the old interface for anything requiring some quick adjustments other than exposure. It did fine as my main wildlife camera prior even though it lacks the advanced subject detection and it’s capable enough. I didn’t like the EVF blackout but managed with it.
Hear you loud and clear, and you make very valid good points, and yes Z7II is not a Z8.
Where I was mainly coming from was
2 points with the OP
1) The OP only has $1500 max, that makes the field of choice very small for 45mp FF
2) what he wants to actually use it for.......some wild life yet incorporating some different genre shooting.
The OP says, particularly point 1 and 2, where I feel having any skill sets left over from the DSLR days he should pretty much nail all or most of what he wants.
Shooting mirror less like a DSLR is easy and works well, we did wild life shooting on our DSLRS very well.
Remember the second body is using a much shorter possibly wider lens range, even possibly a zoom lens
The OP
1. Animal scapes/environmental wildlife shots
2. Casual landscape shots while I’m shooting wildlife with the Z8
3. Close-ups when wildlife gets too close for my other setup
4. Emergency backup in case of failure of the Z8 while on a trip
If the OP wants FF, 45mp, the current options are, really a Used Z7II the level of compromise is limited by what he does and skill sets the OP has. The OP just needs to shoot DSLR style.
I think it was Thom Hogan as i recall ? who showed how and why you can use the Z7II as a wild life camera, i mean Lots of people do well with the Z7II as they did with their D850...........and still do, comparing it as to the Z8 yes there is a gap, but how big that gap is directly related to $.
Once you use a Z8 Z9 it’s hard to go back to anything else, but gee the Z7II is still a very capable camera it just mean you have to do a little more of the work.
The challenge is easily fixed if the OP can find the extra $1500 or so to get a used Z8.
Only an opinion