...
Im still hoping fuji will at least bless us with at least a FF version of a x100...
There is no evidence FUJIFILM will ever offer a new camera with a 24 X 36 mm sensor.
Why should they?
The X-100 would be the least likely platform for a 24 X 36 mm product A
X-100 lens is much longer than one might guess. At one time the X-100 lens to sensor distance was the closest of any mirrorless camera (it may still be). Accommodating a 24 X 36 mm sensor would require a complete redesign and the result would be a different user experience than the APS-C X-100 cameras.
The FUJIFILM GFX 100 and GFX 50 have more sensor area. If sensor area is a purchase priority, why settle for 24 X 36 mm?
Epson, Leica and FUJIFILM X-Pro cameras are the only interchangeable lens cameras that offer important aspect of the classic range finder experience - being able to compose while directly observing what's outside the frame line estimates. The RD-1 is impractical. Its sensor technology (same as Nikon D100) is almost 19 years old and they cost $1,300 - $3,000.
In terms of
sensitivity (native signal-to-noise ratio), the newer X-Trans sensors are up to 0.8 stops less sensitive than the M-10. I can't find data for the X-Pro3, but the X-100F is about 0.3 stops down compared to the M10 and 0.6 stops below the Leica Q2. The Leica M262/240 is about .6 stops below the M10. The M10 is less sensitive than the GFX-100 and GFX-50 by about 1.5 and 1 stops respectively.
I can operate my X-Pro2 and XF prime lenses as I operated my Zeiss Ikon ZM. This includes where I stood to make photographs. Once optimized to simulate a minimalistic optical rangefinder experience, the menus can be ignored (except reformat the SDHC card and occasionally set the date/time parameters.
The FUJIFILM X-Pro cameras are
not Leica substitutes. People who want a complete film rangefinder experience must buy a Leica.
People who own M/LTM lenses will be better served using a Leica. With an APS-C sensor and M-mount adapter they won't be able to stand in the same place (i.e. use the same lens to subject distance) they could stand in with their favorite focal length M/LTM lens. A beloved 50mm M lens will have an effective angle of view similar to a 75 MM lens when you stand in the same place. So you will have to use a M 35mm lens on an APS-C camera to stand in the same place you stood with the M9, M240, M262 and M10 cameras. I would find this frustrating.
The X-Pro 2 or 3 with XF lenses offers an option for those who want to use a digital camera as they used a film rangefinder camera. The APS-C sensor area is not a significant disadvantage. The disadvantage is mostly figuring out how set up the Menu system parameters to create a minimalistic, pseudo-mannual focus environment.