I would tend to agree with the general consensus that the Retainer system as it stands is extremely lacking. I am, however, very curious what it is that we don't know about the system yet. There's still a lot of stuff that is clearly already in the game that we haven't picked up on yet. For one thing, retainers have levels, but as far as I can tell, no one really knows why yet. Also, the emblem representing your retainer changes based on his or her job, but I am suspicious that there are more modes than just idle and bazaar (which are the only two I've seen so far). I wouldn't go as far as to say that anything we haven't seen yet will save the system, but it does seem to have a few tricks up its personified sleeves.