CDA
Oh dear oh dear! One can see automation becoming the god here. There are so many ways of killing the cat and it really is up to the pilot to choose the best use of modes etc depending on the tactical situation at any one given time. He could even - heaven forfend - dispense with the automation and use his "skills". 30 odd years ago, on the Gripper, it was the norm to try to set a given power at ToD and not touch the "throttles" until touchdown going into LHR. Of course it required a good knowledge of the usual procedures and the expected miles to run but, as I am sure Heathrow Director will acknowledge, Approach controllers, especially Director, were absolutely top notch and one could see their intentions a mile off (well, make that a hundred!).
Prober