BOAC lets assume you are doing an ILS cat 1 approach at an A380 capable airport or other NPA with higher minima. If you were perfectly on the IFR slope at night with limited cues other than the VASIS when you become visual the PAPI would tell you you are low in most aircraft other than large aircraft. This than requires a change in power and attitude to achieve the new visual landing point. Imagine you were flying a light jet with virtually no difference between eye position and gear track as opposed to an A380. Should you fly level at 100-200 ft to achieve the correct PAPI indication or continue to land below visual slope indication. If you fly a correct approach path and speed, TCH and touchdown point should be natural. What TCH will you achieve if you fly the PAPI for an A380 in a 737? What affect does that have on your landing distance given your TCH is now way higher, do jets now have landing figures for the increased TCH?