These specs look perfect for my needs.
I shoot architectural, Industrial & product.
Been shooting Canon professionally since 1981 as well as 6x6, 6x17 & 4x5.
For Architectural I need as wide an angle of view as possible with minimal distortion.
I shoot a lot of interiors including many tight spaces like automotive and aircraft interiors.
That means full sized sensor bodies paired with quality wide angle lenses fit my work best.
At one time I shot with Hasselblad SWC Superwide, but once I went all digital I found medium format digital systems didn't offer comparable wide fields of view due to crop factors as well as full system costs. My first full time digital body was a 1Ds mkII. I found that RAW files I could make with this system were comparable to the film scans I could make from my medium format system (8000ED scans, not $100 wet drum). I had several disappointments with that system including the $8000 price tag and sensor dust issues but once I started using it I stopped shooting film.
My newer body is a 5D mkIII. Compared to the 1Ds it nearly completely solved the sensor dust issue, cost far less ($3500) and added capabilities of HD video, 14 bit (over 12 on the 1Ds) and HDR which I use as an auto bracket. The only thing I need to improve on this is more resolution and perhaps addition bit depth.
I do high end retouching. Over 12,000 hrs of Photoshop when I last tallied it a couple of years ago. When I'm detailing shots to remove signs, fix pavements and other details more resolution helps. I understand that 50mp will likely exceed the resolving powers of my lenses, which is why I shoot all L lenses and use top end polarizer filters. I am planning to upgrade my glass as improved version are available.
I'm not concerned about high ISO, I can use the 5D for anything that requires on camera flash, low light, high fps, etc. If this new camera shot only ISO 100 and was full manual I'd be fine with that. I'm also not worried about file sizes. I already manage terabytes of files on my desktop and use high powered computers to work and manage my files.
I can understand shooters that want everything in one camera, but I don't think this is that type of camera. There are plenty of other do-everything options, but most have to make multiple trade offs to do that. I'm happy this includes HD video and would have liked a 4K capability, but I'll happily give that up for the additional resolution. 50mp fits my needs. 40+ might have been acceptable but 36 would have fallen short of my expectations.
I'm also glad to see the "R" version that will allow me to decide when to add anti-aliasing, moire control and edge softening in post production if needed at all.
Some earlier posts suggest the US pricing might be $3450. That would be great. I can consider anything up to $6000 per body and make a business model for it, over that becomes less clear.
Looking forward to Feb.6th when more details about the specs, cost and availability come out.