I agree, {moveOut_x} would be better. Anyway, if someone want to deploy swimmers from the chopper - do it;)

actually you can do that in alpha with a script commands. place a chopper (name 'heli', formation 'flying',) with a team in cargo, set trigger, on activation type this: {_x action ["eject", heli]} forEach units player; and you'll get desired effect.

There's software called "Game Commander". Maybe you'll find it usefull.