That's a lot of words to completely disregard the fact that autofocus M adapter exists for Z and E mounts, allowing you to keep the same lenses, but with AF on digital - see Techart. Nikon Z system cooperates best thanks to a thin sensor filter stack, not too far from Leica's.
On vacay I can carry a practical 24-120 zoom and a light M-mount 35mm for portraits or lower light situations, without the pretense.