Maybe wishful thinking but I don't see why this can't be done soon in the near future. I record a lot over water and ocean and many times filming people for fun surfing waves. Sometimes it's better to get closer to the water for more action but it can be a bit nerve racking at times. The P3 has some sort of sensor on the underside for indoors, right? It would be nice if I could program it to not go below x amount of feet. Example if I get within 15' it will not go down any further to risk sinking it. To land you have some override for landing mode. Anyways, is it just me, or would this be a nice feature to have? Thanks!