I think if you flew the entire STAR as a CDA you'd probably save a lot of fuel as opposed to holding for 30 mins or whatever...? Only problem with that is if we do get shortcuts we will be ridiculously high!
Maybe it will also reduce the instances where we need to slow down to 250kts passing in the region of Doha etc?
Hell it's got to work, the Germans use it a lot and their known for efficiency.
