In defence (but only a little
) of Crab, this scenario is a low-medium speed regime, and it is a
little bit (not utterly) counter-intuitive, at least initially, to control speed with collective and RoD with cyclic on an instrument approach.
However, it doesn't take much getting used to once you get your head round it, and our co-pilots seem to manage quite alright in a short time.
However, as the L2 flies apps quite happily fully coupled 95% of the time, there is rarely any need to do it 3-axis anyway.