Last summer, the Arlington Division of Transportation began to study N. Pershing Drive between N. Barton and N. Piedmont Streets in order to develop a preliminary concept plan for the Pershing Drive Complete Streets Project, which they have since developed and are accepting comments on.
The project consists of installing high priority spot improvements along N. Pershing Drive from N. Barton – N. Piedmont Streets to improve safety for all street users.
The project has several elements that should lead to a better pedestrian experience and even add traffic calming, but from a cycling standpoint it is basically limited to sharrows (which is not nothing, but it's not protected bike lanes either. Below is the typical changes proposed at each intersection.
(though I prefer the other alternative to this one in which the weird stub road on the NE side is made into greenspace)
An exception is that on the Cleveland to Danville section. It currently has bike lanes (as does the Barton to Cleveland section), and those would remain with more solid lines in places where they are currently dashed.
I can count on one hands the number of times I've been on Pershing and probably not in years, so I can't really weigh in. Perhaps, as some suggest, a bicycle boulevard on 5th makes more sense - especially when coupled with an improved Arlington Boulevard Trail. I see these proposals as an improvement, even if only a small one.
You can sit your comments at the county's website.