A question to those who know SFO
The fact that 28L and 28R are closer together than is desirable is well known. But this seems gratuitous. Taxiway C is to the right of 28R. While it would be a big construction project, why isn't Taxiway C converted into a new 28R, and the current 28R converted into a taxiway? It would seem to be a quick way of gaining another 400-500 feet of separation between 28L and 28R.