[mst]

...and I have a feeling the Fc might replace the Z50 as review camera.

After a few days with the Z Fc, I can wholeheartedly say: nope, won't happen I'll keep the Z50 for DX reviews. And the X-T30 as lightweight system.

The Z Fc has a nice retro look, but feels more like plastic than any current Fuji. Difficult to hold without additional grip. The tiny LCD on the top showing the aperture value is basically useless in anything but bright daylight (and difficult to read even then). and redundant anyway: aperture is of course shown both in the viewfinder and on the rear LCD.
I like dials and switches for important functions, but only a few of them have locks (ISO and shutter speed), while others are easily accidently moved (mode switch, for example). There is no cable release, only a wireless release... this true for the Z50 also, but on a retro-style camera an old-fashioned thread in the shutter button would have been nice.