NPAs such as at BGBW may require a steep approach into a valley which allows a transition to a more normal flare and landing
Absolutely right, PEI. In which case, the answer to the original question "How does a 757 complete a 5.6 degree glide from 3,100' - Air Greenland BGBW" should be "landing flap setting and Flight Idle power to the transition point should do the trick"