Compared to the Fujifilm GFX50S, the Fujifilm GFX100 shows noticably less moire, and it is also sharper than pretty much any other camera on the DPReview database. Regarding color noise at high ISO, the Fujifilm GFX100 is also superior to the GFX50S and any other full frame camera for that matter.
If you are into medium format GFX, then the GFX100 looks like a sensible step up in image quality.
And now, happy pixel peeping to all of you :)
The GFX Community