DX body to attach the FX pro zoom lens is just look nice only.
For excepted the 70-200 VR That is no comment.
In my opinion for D7000 is quite useful already, maybe you just worry after tomorrow may jump to FX body.
At this time if you can afford on FX pro zoom lens an just go ahead, even mine also have one for 24-70mm f2.8G.
For all FX prime standard lens, if you wanna play with HD output may consider as G version.
If you still like the AFD on screw drive for f1.4D also worth buy. Nobody can avoid you.
But when you are using the DX body at lease you have to get another DX lens for cover wide end in 24~28 equal to 35mm FX length.
That is what I can advice you
I know that many would feel getting a 24-70 on a DX body is just to look cool or pro, but I'm choosing it because it can quite serve as a general lens and I'm looking in the long run. Cos I would definitely opt to upgrade to a FX body down the road, maybe like 3-5 years from now.That's why I had chose the 24-7. I did not choose prime because it would be less versatile although some may say the opposite. And if I would go for a prime, I'll want the 85mm 1.4G, but the price is similar to that of 24-70. Furthermore, 85mm is more of a portrait than general lens, that's why I went for the 24-70 too