A good alanding rate that would get applause in your app for a Cessna 172 would be 50-100 fpm. Typical landing rate for an Airbus A 320 is around 200 FPM, which in your app, rarely gets any positive comments or applause. This should be adjustable by the pilot for the type of aircraft he is flying.
+1 to this idea. Maybe it could be based on the weight of the aircraft automatically (so you wouldn't have to tweak it for each - likely some log(weight) * nominal - e.g. you wouldn't expect 150 fpm in a 737).
Hey, can you please explain more.