Just what the tile says, I would very much like if there was an actual helicopter animation for insertion and extraction, which would make the game a lot cooler.
It could give more adrenaline to the extraction mechanic, imagine having to wait a couple of seconds for the heli to arrive and then having to rappel to it. (also maybe enemies should start swarming you after you call the heli, the extraction mechanic seems just too boring and blank sometimes, maybe to compensate for this the helicopter would have turret gunners, some versions of the Blackhawk helicopter that REACT uses can have them).
Anyways I think this is a cool idea. Also, it seems that you already have some 3d models for the helicopters, both for the exterior and interior.
R6: Extraction is a very good game and I am excited for the future of it, keep up the good work!