Not for the player, but with AI being able to fly with you on dogfight-servers, it would be great fly online with characters you trained and flew with offline.
Basically like the old M1-Platoon-game or Janes Apache Longbow. You could make up your own crews (at least the names) and they got better the more targets you let them kill and the more missions you brought them back from.
For advanced squad-management, you could also send them to trainings, but have to live with their absence for several weeks. Or send them for R&R if their fatigue is too high or their morale is low due to lost comrades. But that is primarily for the offline-part, again.
Unless there is an online campaign of course....
