To be honest, the Zf has never been that attractive an option for me. I handled one recently and hated the ergonomics, and overall, it's not that small of a camera, sure no Z8 but bigger and slightly heaver than the Z6 & Z7. It's not as small as you might think.
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I know the AF is much better than the Z6/Z7 II's and for wildlife photography that might be an attractive feature (but then I'm lucky and have a Z8 / Z9 for that. For me the cards is an issue as all my Z bodies use either SD or XQD/CFExpress so I have quite a few of them, and I really don't want to introduce a 3rd type. Maybe I'm also alone on this but I just don't get the retro dials etc that everyone goes mad for. I didn't get along with them when I had a brief foray some years ago into the Fuji world, and still prefer more modern controls which I find just plain easier to use.
I know this has been said to death before, but my ideal everyday / Travel camera in a Nikon body, would be something akin to the current Z6/Z7 II bodies, with CFe / SD card slots, the 3 way tilting screen of the Z8/Z9, with the latest Expeed chip, latest AF (maybe not quite to the same levels as the flagship cameras), 4K 120 and 10 bit, (don't really need 8k in an everyday camera), with 33+ megapixels, but not more than 50mp, for around £2,500k ish (that's probably wishful thinking). One can dream.