DM,
No-one has ever had a big problem with overspeeding a head with power on. Unfortunately it is a much less effective and therefore much more dangerous tactical descent and approach if you have to keep the Tq high enough to govern NR. And limiting the AUM is not an answer - your 3 troops that FLynx could put into that LS is now 1, and the aircraft will need to go for fuel before it can pick up the next solitary troop for the LS.