An earlier poster mentioned coping with an extra 50 fpm as a result of this, is that correct? If it is, and considering a final approach from say 6 miles out where the aircraft is currently at say 2000ft when it starts to 'descend on the glide' it takes say 2.5 minutes to fly the approach meaning that at 6 miles the aircraft is a mere 150 ft higher than today and close in the difference would be even less , From other posts it would seem that this small change still requires a bit more drag and therefore a bit more power and therefore noise it would seem the whole thing is a complete waste of time