I think it has less to do with ff14 and more to do with recent MMOs in general. Almost every MMO/expansion is popular for a month or two before people get bored and move to the next one. If you think Blade and Soul is any different, i'm sorry but your mistaken. 2-3 months time no1 will care about blade and soul, it's just another flavor of the month MMO like RIFT, TERA, SWOTOR, GW2, and all the other MMOs that have tried to come out the last 3-4 years. When legion comes out everyone will flock to that for a month or two before dispersing to other games. It's just the way MMOs are now, they don't have the replayability that FFXI, Vanilla WoW, and Everquest had.