One thing to remember is that both of Nikon's last releases the D600 (dust) and D800 (left focus point) had 'kinks' upon their release. <<
This might be a topic for a new thread, but I'm not sure where it would go.
Have other Nikon cameras had similar teething pains? I seem to remember a problem with the compression board failing on D70 bodies after many thousands of clicks (I never got there), but otherwise I haven't kept track of developments over the years. I'm just curious if such issues are a common thing that gets worked out in various revisions.