At least during the initial stages of the game, when experimenting with tweaking a single ship, I very rapidly found myself desirous of wanting to:
Save certain orders for a specific class of ships (One does not want plasma gunboats engaging fighters, nor does one want point defense frigates deciding to go tangle with cruisers. Ever. It’d be nice if ships could be ‘rezzed’ with saved default order sets for their class.)
Save fleet formations to be loaded ‘en bloc’ (I really don’t want to have to recreate multiple formations of an identical type every time I start a new battle. It’d be nice to be able to ‘load standard escort frigate formation one’ then tweak it around if needed.)
This last is especially useful if one is fine-tuning. Save and load your entire fleet, make a few adjustments, watch it blown to confetti, load it again, make different adjustments. Lather, rinse,repeat.