Having been an ATP Turbine Capt for twenty years, and flown these for the past 12+ years, I know that the max thrust is in the last ten percent. But we probably temp out more then max engine rpm. Even full scale at altitude, due to temping out, most of the time the rpm doesn't get to 100%. Usually 92-96%. Only ones that I remember getting to 100% were the Garretts. I still don't see the benefit, other than for the 3D guys that might be hovering or high alpha. The curve that you are using, from half stick down to idle is linear? And half stick above with the curve? Which brings up the subject of derating these engines. If you are lowering the top 10 percent of the rpm thrust, the derated turbine isn't producing the thrust that one might think.