I wonder if Nikon will ever replace the AF 180/2.8 ED with an improved model? This is one of the oldest AF lenses in the current lineup, optics date back to the end of 1994 when the first AF Nikkors were introduced. Surely there is a space in the market between the 200/2 and 70-200/2.8 for a smaller and cheaper alternative?
Yes, but if they introduce a rational alternative, the irrational becomes very difficult to sell.
There is the 70-200/4 that is a reasonable alternative, though, if you can work with the f/4 maximum aperture. The AF isn't as fast as with the f/2.8 zooms, and it isn't as sharp or flare-resistant as the latest 70-200/2.8 FL but the f/4 produces images with a pleasing look and the lens is reasonably compact and lightweight.
I would like to see an AF-S 135/2 and AF-S 180/2.8 but I think Nikon believe that most people will want to use a zoom in this focal range.