What do you think about the new Z6 III features? The pre-release capture looks really interesting. I use Live Photos on my iPhone every so often to reselect the key photo. It doesn’t look like there’s an option to create gifs in camera from the pre-release capture photos. But I bet third party apps should be available.
I (almost) never print, the advantage of the extra pixels would be the ability to crop significantly and still end with usable shots. Once I go full frame the plan would be to sell the old kit. A couple of my lenses indeed come from the d7000 days! The 50mm/1.8 IIRC.