Oh, I was thinking about this the wrong way -- I had read it as Android's ability to mount USB OTG mass storage devices plugged into the phone. I agree with yo

Oh, I was thinking about this the wrong way -- I had read it as Android's ability to mount USB OTG mass storage devices plugged into the phone. I agree with you, if the internal filesystem can't be mounted as a filesystem on most PCs then there should be some sort of virtual/emulation layer.