Why has Nikon neglected the wide angle?

Right now my widest lens is the 24-70 2.8. While I find 24mm to plenty wide I was thinking about getting a wider angle lens when I noticed that there really aren't very many choices when it comes to modern wide angles.

1: 14-24: Probably the best wide angle out there but I tried it and I didn't really like it very much (No filter threads, TERRIBLE front lens cap, also it's HUGE)

2: 16-35 f4: Great focal range but its an f4 lens.

3: 17-35 f2.8: I would get this one but it is ANCIENT and it costs way too much seeing as you can get a 14-24 for almost the same price.

4: 14mm 2.8 prime: Really old and the 14-24 is better.

5: 20mm 2.8 prime: Also old and the 14-24 and the 16-35 are arguably better.

Basically what I'm getting at is why hasn't nikon replaced any of the prime wide angles or the 17-35 2.8?