The reason that the Tarawa cannot simply use the Stennis lua format is down to the code associated with VTOL aircraft within DCS. It can clearly be demonstrated by spawning AV8Bs on the deck of the Stennis (RAMP START or PARKING HOT) and eventually you will see them spawn inside each other.   If I change the AV8B code I can indeed spawn aircraft on the deck as per the image below. Doing this means that AI airframes would lose VTOL capability.     Similarly the helo spawning for the Stennis