If the Nikon D400 is a "true pro" DX camera, not only in size and function but with Image Quality and High ISO clean images sufficient for magazine publication, weddings and other client work, should Nikon produce a series of professional 2.8 zoom lenses for DX format?
I have suggested before that Nikon make the D400 a "mini-D4." Now I am suggesting Nikon produce a line of "mini-professional 2.8 zoom lenses for DX cameras." Something equivalent to the FX 24-70 and 70-210 2.8 zooms in DX like 18-47 and 47-135 2.8 zooms (a 17-55 2.8 DX already exists but doesn't have VR so it could just be updated). They should be able to be designed smaller, lighter and cheaper since they only have to cover the DX format sensor size. The D400 will cost lest than half the cost of a D4. Perhaps DX 2.8 zooms could be produced in Thailand or China for less than half the cost of their FX counterparts.
The point would be to produce a "mini-D4 professional kit" in DX covering the most commonly used zoom ranges.
If Nikon produced such a kit at less than half the price of such a kit in FX, how many would be interested in spending about $4000 to cover wide to zoom range with professional 2.8 glass but in DX rather than FX?