The shuttle bay option explicitly states it makes it a better first responder. It also allows it to take over a fleet tender role letting It do repairs. That's definitely not a role any of our combat ships have.
Cargo hauler seems like it's going to make it travel between the border and the interior more, especially for those already finished or extra hazardous items it mentions, rather than being able to use supplies already in the border outposts to respond to border incidents. It would lessen time on the border.