You are right I'm the first type, so, I'm in the same boat with you
I'm sure that there are plenty of other people who belong to the other two groups, and this is where Nikon makes their money.
I personally like the fact that the 50mm is 50mm on the D700 and that the Nikon 14-24 is wide enough on this body. I like the fact that my camera fits in my hand just right. No one has canceled the laws of physics, and pro quality zoom glass still weighs about 2 pounds, and you need the heavier camera body to balance things out for you when you have the heavy glass on.
With the D700, I wound up exactly where I want to be - for what I shoot with my camera, I don't need the D3, and I feel much more at home with the D700 than with the D300 I used to have. I definitely don't need a Hasselblad But I know exactly what a D80/90 will feel like in my hand and what that camera will allow me to do.
My wife would be the prime contender for the D7k though - she feels perfectly at home with her D300 and the 18-200 VR, which she never needs to change (in fact, I'm the only one who changes her lenses, if she ever wants to shoot with the 50 mm, she refuses to change lenses and does not want to understand why it's difficult to make pro quality glass with the same weight as the 18-200 and its focusing length) - in fact, she never uses any of the additional controls on the D300 body, and the D7k would be a great choice for her. Just as well, the D300 would work really well for me as a backup body, and the 70-200 VRI is exceptional on the D300
When Nikon does come out with an update to the D700, I will probably want to get it if the updates are revolutionary (as they were with the D300 from the D200). However, I probably won't do it because the D700 put quite a dent in my wallet, and I'm not sure that I'll want to do that any time soon
As for the people who are currently using DX bodies and are comfortable with them, they should stay with them as the switch to FX will have them changing their entire lens collection, and NAS will take over