Wasn't the Apocalypse Now crop also director approved?
Anyway, it's apparently Storraro's view that the 2.0:1 crop is a good compromise between available resolution and OAR. Well, at least that's what was said when it was done for Apocalypse Now. Thing is I thought that was based on SD resolution, not HD. But it sounds like the crop is done on the HD master itself, so unless there's a new (re)master for an eventual HDM release, we'll probably be stuck w/ the crop for that too.
_Man_