OK, so here is some more insanity (my insanity, that is) for us to ponder.
I might be off the 24-200 Z lens train. Hear me out and thoughts please.
I have always been a fan of Tamron lenses. Back when I got my first DSLR, the Nikon D50 the only lens I could afford was a 28-200 screw drive lens. Not the best quality, but it was better than anything else I had before.
Since then, I've been seeing the Tamron quality improve to equal and in some cases surpass the OEM lenses. I've had several Tamron lenses over the years and still have 2 that I use frequently - the 70-200/2.8 G2 and the 17-35/2.8-4.
I've been nosing around an looking at the new 28-200/2.8-5.6 they have out now for Sony e-mount.
By all metrics, it seems to be slightly better than the 24-200 Z. Apertures are faster, edge to edge sharpness seems to be the same if not slightly better. I'm not worried about the 24 to 28mm difference. I'm used to 28mm on the ride end and if I really need wider, I already have the Tamron 17-35 to fall back on.
The price is almost $200 less expensive on the Tamron than the Nikon.
I'm in no hurry to get the 24-200 as the 24-70 is superb and I can always bring along the Nikon 70-300.
Tamron has not stated when they are going to bring out the Z mount lenses, but they are coming...so I'm contemplating pumping the brakes and waiting to on the Tamron options.