It would be a great feature if you could determine what the pets you have selected have for abilities and have a priority for casting. There are some buff spells some have (that work over a 9 round period) that are beneficial in long fights. Also to select pets that have higher damage towards the class being fought. (If you are about to start a fight with a Chicken, select one or two pets that have high damage spells toward flight pets).
An override for the option "persistent pet team" if you are running a profile in a low level area, and you come across a rare to capture. The override would equip a equal level pet, that does not do Critical Damage to the rare.