I've also gone and hiked looking at options to link the 2nd switchback to just west of Pipeline. With the new parking lot I think many people would utilize something there. Brings you out above Bobsled then downhill back to parking.
This could be the ideal route/option alternative to a parallel trail to BP as the ground is considerably less steep and rocky and is great open benched terrain. It wouldn't be too much more climbing than the BP east of the Pipeline/Ladies exits and there would be a number of descent options from the 2nd switchback.