The three max level missions give 40 fleet commendations a day, and the upcoming ship gear costs 500 comms each, or 700 for the schematics. The new missions in 1.6 will be practically impossible without the upgrades.
I've noticed that there's always somebody asking where the final heavy fighter for the bonus mission is on Ascendancy Barrier. It's on the right side of the screen with about 50 seconds left in the mission - check the video if you're still not sure.
Enjoy the prep for Heroic Space Missions, fellow pilots.