I should have been requesting this 3+ years ago when I made them but now seems to be the right time since more people are seeing the use of it now.
So I suggest the possibility to save multiple ships in one file (new format ?). One reason being that savegame files are easily corrupted and incompatible with each new Cosmoteer versions, hence, all setups would be lost.
Also this way it would use the normal ship importing features and checks which would solve changes with mods or other bug issues that comes with savegames.
To do this ships or fleet have to be selected and saved via a new menu. The ships would be saved in a list of ships with coordinates based on the background grid but either relative to each other or in absolute world coordinates plus their orientation (likewise). The import would either be directly based on their coordinates+orientation (inserted into world grid) or like how ships are put down but either centered or based on the first ship in the list. I think using world grid is preferred since it would replicate the setup. Or make it optional so new arrangements with others can be made.