Yeah honestly. Good idea, and I hate to be a hater. But it probably won't happen. Ski around them, I try to make it obvious that they are in the blatant way when I am lapping the park. Just cut pretty close like you don't see them there, and proceed to hit the feature. Don't hit them obviously. If they are standing in the landing, ask them to politely move so they don't get seriously injured.
ALSO!!!!!! We could make stickers that have a picture of a rail and the lip onto, put an arrow pointing at the lip, and it says "THIS IS NOT A JUMP"