Breakdown Nikon with an update

Once again, in the last two years. As a professional, I bought the first the D 800 course with AF problem, as the next camera a D 600 Well, the problems are also known and now the D750, the camera is top to complement the D 4S and D 800 but this time no reasonable handle.
I always use since the beginning, the original battery handles only this time it's the handle, the chopping operation a return without problems, but there are currently no new requests for repurchase also Nikon's no perplexity!
This breakdown series there used not, I bought a D2, then a D2Xs, D3 D3X + and D + 200 then the D300 so there was always all right.
Is it on the duration but more expensive if Nikon is always looking for the cheapest manufacturer?

But the 750 is top, this comes at Events / Press next to the D4s used. A functioning battery grip with one battery charge would be good, especially since the telephoto lenses sit on, so even for the balance.
The NEF files the D 750 are recognized by Photoshop now, but the software Nikon Capture NX2 does not want and capture D well, converts in TIFF or DNG to why this detour?
Nikon has no time to create their own algorithms?
I like to use as a pre-burner, the Capture NX2 and only then Photoshop .... So to PS always the Nikon software, ViewNX 2 Transport, Capture NX 2 and PS.

Update: re-bought a battery grip now for Fashion Week I absolutely need such a thing, it works better than my first.
The aperture is still very difficult, perhaps even not so bad.
Everything else works fine !!!
The fit could be better, it does not wobble but some as the visible edges do not quite match.
I go about from one star to two.
Price performance is not good, but better people as a replica, in particular for the electronics of the camera.