You might have missed the part where I said:You might have a point about the IBIS or lack thereof. One of the rather cool features of the GX9 is that when paired with certain Lumix lenses - which have their own built-in Power IBIS (I can't remember exactly what it's called), you actually get a double-IBIS effect - both from the camera and from the lens! Occasionally when I've used my 1st generation and razor-sharp general purpose zoom - the fixed f/2.8 12-35mm Lumix - I've been able to get some remarkably sharp (i.e. unblurry) handheld shots at ludicrously lengthy exposures.
And you're right about the X30's little EVF: it's surprisingly good. At the risk of beating a metaphorical dead horse, though, if you are ever able to get your hands on the soft rubber eyecup for the GX9, I recommend it. It truly transformed my feelings about that camera's viewfinder in ways I still can barely fathom.
The X-S10 might be an interesting choice, though
It clearly depends on the eyes of the individually - I've read lots of comments about the eyecup improving the outlook, but I'm severely myopic, wear glasses, and cannot use the eyecup. The GX8 EVF was a miracle, and the G85's is also very good.but even with the additional eyecup I find the EVF pretty useless
If I understand right, IBIS on Fuji also works in tandem with lens stabilisation, which would be good. I have the XF 27mm f/2.8 unstabilised, and I can't shoot for sh!t with it on X-T20.