It would be nice perhaps a child of war
It would be nice I recall having a npc companion in 11 that you teamed up and raised. For 14 maybe have one for a particular jobs. Example I miss having a wyvern companion for DRG. as a pet. Help dps / heal / ect. As for a child perhaps make a story line such as finding their mother or father in the ashes of war with alternate endings and perhaps they offer to work for you in exchange for shelter or as thanks for helping them find conclusion to their search. Even better you save them from some primal before they get taken over. Just a thought.