I like Kaliyo better but oh well, swtor is a good example why it might be difficult to implement a similar system into FFXIV's MSQ. NPC companions in MSQ simply take up too much space in the story and swtor did a pretty bad job with the returning love interests. Mine has not talked to me in MSQ for ages which is pretty sad.

Maybe they could add love interests or NPC companions in general to the adventurers guild. They could even give them a personal sidequest for each NPC.