i thnk that transport choopers would need to be like the apc , a movil spawn point , except the blackhawk . why? because the mi17 can carry 30 passenger max , same for the merlin, but the BH is very small compared to the others , capable for only 11 passengers.
for the USMC would be cool the CH-53 to be the spawnable chooper.
also , all the transport choopers need to have 8 passenger , except the BH
finaly , would be cool to have some variants of transport choopers , like a mi17 capable of "fire" one jeep to deployit on the field (Obviously, that variant would not be spawnable).





