hueyracer
What! I have just retired from being the MTP on AStars and 412. Both had an auto check post servieing and, sometimes, it was out of limits for the weight/temp/altitude on the day. When that happened, the RRPM were adjusted mechanically to bring them into limits ( -0 to +10 RRPM of datum for the 350 and +/- 3% for the 412).
Onto you're next point, if the Nr is high during the flare, why not use collective to contain it? Basics!