There’s a lot of interesting layers to that, for the simple fact that not only do I think Iago’s kind of adopted all of these characters (including Jasmine) but also that even with the temptation of treasure he would consign himself to a life of constant travel without an actual home, fraught with danger (because Cassim has just as many, if not more, adventures to go on as Aladdin does).
It’ll be interesting to explore when the time finally comes.