Also lift system works not very convenient. Especially with mission delivery cargos. I'd say it's better to make a cable a little longer at default and then make it a little shorter when you take the cargo to make it less possible to crush the cargo when you take it.
I also think that parachute system should be redone. For now I fail it in 9 out of 10 cases. ^_^ I think parachute should work either automatically with a little delay (let's say 0.2-0.5 seconds) or at least should be also activated by pressing E again. There is also can be a system for preventing accident leaving helicopter while it flies (player should tap E button twice in a short period like 1 second or hold E for 0.5 second). I couldn't imagine I need it but that happened with me several times. ^_^'