I won't lie I'm not the most knowledgeable person here but I'll provide you with some quick somewhat accurate answers and hopefully someone can confirm or provide better ones at a later time.

1. Sorry but I'm not sure about this, my guess would be yes but I don't use jets and/or other vehicles often.
2. Yes, the aimbot works for heli pilot. Last I checked.
3. There is no real explanation that I've read on the forums but I think that it removes the travel time of the bullet making it an instant hit so it's advertised as unlimited range. Whether this is accurate or not I don't know.
4. The screenshot feature of pb is completely disabled from what I've gathered. Or it sends a black screen, most likely the same thing but w/e.

If I've provided inaccurate information then hopefully someone will jump in and correct it or elaborate further.