I've regularly seen chinooks during night sortie, the only thing one can hear is minute vibrations (I was about a klik away from the hepter)Again, you seem to read between the lines. Watch a black hawk taking off and approaching the helipad. Watch a V22 lifting vertically up and converting and when it is approaching the helipad. Bigger aircraft can become good targets. Again, you are venturing into enemy territory. You don't know where a proper helipad is. Even if you select a designated place for an LZ, you don't know the surface of it. Think of a V22s nose landing oleo leg getting stuck in mud immediately after landing. What will you do. Will you keep digging or will you just try to lick it up and get into a dynamic rollover?
Why do you think 160th have pavehawks and Chinooks with refuelling probes? They can easily make that range with a V22. There is a reason.