i own the nikon 24/1.4 AF-S, 28/1.4 AF-D and the 35/1.4 AF-S.
every single one of them complements each other. there is no overlap.
reason why the 24/1.4 is significantly sharper than the 35/1.4 is due to the aspherical element in its lens design. It is a very sharp lens. One of the few that can keep up with the D800E sensor at f/2.0 and beyond. The 35/1.4 suffers from resolution issues until beyond f/4.0 for good measure.
the 28/1.4 AF-D is a very classic rendering lens, with a slower AF, and its actually quite soft with the D800E. It did reasonably well with the 12MP FF cameras - d700/D3/D3S for a long period of time, but with the latest sensor and its dated 1994 design, you can see its flaws. It does however, have very beautiful bokeh and a classic rendering suitable for portraits.
Also, as far as I know, it is the only 28mm f/1.4 of its kind out there.
I will advise holding onto the 35 and hopefully getting the 24/1.4 eventually. Sometimes you'll need the benefit of an ultra wide, sometimes you'll prefer a slightly wide to normal field of view.
As for the 85/1.4D vs the 85/1.4G, there are significant differences in its rendering. One is more classic, the other is ridiculously sharp, high contrast, full of detail resolved and faster focusing. Ironically these days I don't go for ultimate sharpness, preferring to cover weddings with the 28/1.4 AF-D and the 85/1.4 AF-D, even though I own the newer lenses. Horses for courses. What count is if the folks viewing your shots enjoy what you've taken.