Hopefully nothing. I don't think there's really anything POL can do that FFXIV shouldn't be able to do within the game itself. My understanding was that a large part of the reason for developing POL was as a portal to the 'many' games that SE would develop online, which aside from FFXI and Tetra Master ended up being, what... one? Two? Unsuccessful games anyway. I think/hope this time they'll just stick to something simpler. Or if they must add a middleman, hopefully it will be far better than POL was.
Ok, now we're going to get slash fiction of Wint x Kachi somehere... rule 34 and all...
Never confuse your inference as the listener for an implication of the speaker.
Good games are subjective like good food is subjective. You're not going to seriously tell me that there's not a psychological basis for why pizza is great and lutefisk is revolting. The thing about subjectivity is that, as subjects go, humans actually have a great deal in common.