2) my prediction: d810 body with lower MP.
From your lips to Nikons ears. I'm one of those who want the full magnesium D810 pro body and controls but don't need or want the 36MP capability. I had already talked my self into getting the D810 and just shooting at the lower resolution of FX: 5520 x 3680=20MP. Then I saw this thread so now I'm in a holding pattern.
I want a pro camera body with great ISO, descent frames per second, and has good image quality. I could care less about video, GPS, WiFi, Navigation, text or email capabilities or any other capabilities I don't need. I have dedicated tools for those other needs. I just want a solidly built body that will take good photographs, will be issue free, and will be fun to use.
I may be in the minority.