My thanks to all... I am still recovering.
I am leaning to the idea of "Fleet Manuevering" mission. Not in the RTS style but realistically while in your capital ship. A year ago, I have completed the pilotable Erebus and Chimera, complete with the HUD. And a test mission where you command you fleet. I have 4 maneuvers at this time; flanking, straight attack, left and right attack. This where I need more ideas. The options will be in the HUD. I did this in the Reboot. As there are only 4 possible buttons, pads 1 to 4, it will be daunting to do this in the mission code itself, it is doable but tedious. If you edit the "steath" mission in the Reboot, you will see the almost 100 lines of code to just incorporate the "proximity" and "enemy detection" element. If only someone will give a script template for the fleet command. I can't do scripting but I am talented in deciphering and modifying scripts.
I also have ideas for artllery strike missions (tag and target), gate defense mission (piloting and commanding sentry cannons), and "beat the clock" missions. I had those ideas figured out a year ago before my unfortunate spell. Now, how to apply it with the story is the main task.