24 million pixels on FX looks very good with any number of lenses made over the last 20 years or a bit more. Most of the telephoto zooms are still pretty good, even older cheapies like the 70-210 f/4, or even the inexpensive f/4~5.6 version. In 50mm lenses, I don't think the 50mm f/1.4 AF-S G is worth the price premium over the 50/1.8 AF-S G model (and many agree). I'm not that sold on the 50/1.8 AF-S G myself, over the earlier 50mm 1.8 AF...I have a pair of those, and the 1.8 G...I prefer the smaller size of the older 1.8 AF models.
At f/8 on 24MP FX, almost any lens is decent, and it seems to me that diffraction takes the edge off of every lens by f/8...so a $45 28-80 f/3.5~5.6 AF-D or the equally cheap 28-80 G-series, when shot at f/8 to f/11 looks about the same as a $2400 24-70 AF-S does when it too is shot at f/8 to f/11, in most situations.
I think lens quality is overblown/overemphasized by most people, for most peoples' uses....professionals may be the sole exception. Most images are going to be sharpened up at the computer and down-sized significantly. On a 1600-pixel wide image on a computer screen, or a 5x7 to 6x9 inch sized print, any lens looks fine.
I see 24 million pixels on FX as being a very sweet spot; it is a lot of information, in a good-sized image, yet it does not utterly demand the ne plus ultra level of lens performance. Any decent lens makes a decent image. YES, the $4,000 to $8,000 exotics look superlative, but they are also huge, heavy lenses and very impractical most of the time.
The wide-angle lenses are where the real money needs to be spent. Almost anything longer 50mm is a GOOD lens if it has been made by Nikon within the last 20 years. The 60mm micro-Nikkors are super-crispy. Tamron 90 macro, Tokina 100 macro, both great. The newish 85mm AF-S G Nikkor is superb in overall performance, and it's also affordable. The new 24-85 AF-S VR-G was sort of designed for the new FX Nikons, and gets pretty good reviews--plus 24,28,35,50,85 gives you ALL of the regular, everyday lens lengths you will want and need for a convenience/utility zoom, plus VR for shooting stopped down to get DOF when not using a tripod.