Rotorspeed - exactly the problem we have all grappled with - you have a very capable helicopter yet you choose to follow a legacy procedure from S-61 days instead of a far more efficient in-aircraft letdown far closer to the intended landing point.
I get the idea of using the PM to make inputs to the AFCS but, as 212man states, how does that work when he is supposed to be monitoring? Some confusion arises when you ask the PM to select an autopilot function - ALTA, HDG, TAS - good CRM but does it cross the boundary of PF/PM?
Personally I don't have a problem with it but I don't do commercial SAR.