Admin cannot reply atm (at least in this topic), but I asked him a couple of days ago about arming the carriers and that should be fixed today.
As for the aim-120's they where never allowed, i agree that it's difficult since the enemy AI has ET and ER missiles and they all fly faster then the hornet.
But now you can loft the AIM-7MH, although you might not get a kill from this, most of the time it forces enemy AI to go defensive