I have mine on order along with the X70. 24MP is the sweet spot for APS-C. I read somewhere that any higher and diffraction will start to hit around f/8 or so.
Expectations were super high, so anything less is considered a disappointment. If you look at the cummulative nature of the X-Pro 2, it's a solid combination. 273 AF points, AF joystick, dual card slots, hybrid OVF/EVF, improved buttons, etc. Disappointment is with the lack of tilt screen which I use. And price but it is what it is.
You'll hear people complain that it's too expensive. Of course I wouldn't mind if it was cheaper. But if you see the behind the scenes about how Fuji's are manufactured in Japan and seemingly have the human element involved it's not surprising. You'll have people compare it on a spec sheet versus a Nikon D500 and say 'Super fail, it doesn't shoot 10FPS, OMG!' or say 'You can get a Gen 1 Sony a7 for less!'. Look at the entire picture, the lenses, the ergonomics, the useability, etc and it's different.
You'll also have people who prefer the X-T series handling and styling and those who prefer the rangefinder style. Myself personally I can't wait to get my X-Pro 2 and use it in conjunction with the smaller x70 as a walk around, secondary camera.