Ok there were sufficient FF allusions in Live Letters IV and V (i think those were the ones). They're really pounding those out.

Ultimately they do want to show off as much of the flashy FF-ness as possible during E3, but I think there's still enough for XIV to stand out as its own thing. It'd be a matter of playing the game and getting immersed in the unique world before you stumble on all of the fan service.