Thank you all very much for the informative posts once again.
Definitely does make sense.
Line training captain today told me he personally never uses V/S to increase ROD generally because it disregards speed, but often uses it for a slow rate of climb for passenger comfort, and also to slow ROD when he finds himself below profile.
When using V/S to minimize rate of descent or climb, thrust will be added or reduced to maintain the manged speed, correct?
Also, since you bring it up intruder.
I have done it once in the sim only, intercepting GS from above.
Arm the approach, turn alt knob to be higher, select V/S -1500-2000 and pull.
Use speed brakes to help?
From what I have been told, the airbus is a pain to understand at first, but is a charm once you understand it.
Right now every captain I watch does something different. Some randomly seem to go on open climb, some manage, some would rather be low and slow, some high and somewhat fast, etc.
all in all it's an amazing aircraft I think.(not that I have much to compare it with
)
thanks for the responses guys!