Thats a personal opinion
The social list I use for friends that are not in my LS and friends that I added prior to them joining my LS. In XI I had to constantly sort through my friend's list because the 100-200(can't remember how much cap was) was constantly full. I make ALOT of friends when I play games like these and I should NOT have to use my social list to tell if my Linkshell members are online. It makes no since, why even have a Linkshell list if your gonna add everyone to your social?