nekomata fuyu
Mongoose
On the issue of balance, I would have thought that recovery would be the least of the worries that Fleet Carrier brings up. Much more important to me is the +1 to dogfight instead of the weak pseudo-save, and that's granted to all fighters in the fleet even if they're not even from the same faction!
Even if you were to limit a Poseiden's Fleet Carrier to just Auroras though, it doesn't escape the issue that Fleet Carrier's strength is strongly dependant on just how many flights are in the battle in the first place. I think that next to that particular variable, everything is going to be fairly insignificant to balance anyway. It follows that if there are any balance issues with Fleet Carrier, the only real hope of bringing it in line will be to limit its effect (including dogfight bonus) to only the ships that were being carried by the carrier.
Even if you were to limit a Poseiden's Fleet Carrier to just Auroras though, it doesn't escape the issue that Fleet Carrier's strength is strongly dependant on just how many flights are in the battle in the first place. I think that next to that particular variable, everything is going to be fairly insignificant to balance anyway. It follows that if there are any balance issues with Fleet Carrier, the only real hope of bringing it in line will be to limit its effect (including dogfight bonus) to only the ships that were being carried by the carrier.