DC Fan wrote in post #15844314
Scatterbrained wrote in post #15843795
I would look at that camera and say "meh". The perfect camera for me would look a lot different.
Medium format sensor with IBIS. About 80mp variant of the exmore sensor with no AA filter.
Pentax 645 form factor and weather sealing.
1Dx auto focus capabilities scaled up to the medium format sensor.
Magic Lantern type firmware capabilities native, with open source firmware to allow for limitless custom tweaking.
Optional Cambo type attachment to allow for full technical lens movements while retaining complete communication between lens and body.
Viewfinder shutter ala 1D series.
WiFi
Dual CF card slots
3fps
-3 EV AF capabilites ala 6D
Locking mode dial
native 25 base iso
Did I forget anything?

You basically described the Phase One IQ180 digital back,
which is already available, bundled with a lens and a body for US $42,000.
You can get an IQ180, DF+, and two lenses for under $40k now; possibly less if you buy used privately, and now that the IQ2 series is out, prices are going to go down even more.
But these backs are not that fast, and neither is the DF+. Maybe Phase One's new rumored camera will be a knockout punch of a machine, but frame rate is still limited by the readout channel bandwidth and onboard memory.
As for ISO25, it's possible as Phase said that is the native ISO of the sensors used in the IQ180, but not every sensor can operate properly at that level, and so the base is ISO35, which I think is plenty low.
MF is great, but where are the long lenses?
Put a 240mm on an 80mp back, crop to 20mp, and voila! You get 960mm of reach. As long as you can consistently get tack sharp photos, it's no problem to crop down to DSLR resolution and still have a better looking image.
It should go without saying, that as you get a reverse-crop effect with larger formats, it takes increasingly long lenses with bigger glass to get the same reach as a smaller camera.