For me personally I think it has to be the new Alliance Raid. As a 10 year FFXI player I'm very much looking forward to visiting Vana'diel again, and honestly there are few things more fun in this game than day 1 alliance raids when no one knows the mechanics and gear isn't causing you to skip mechanics!
Another quiet week in game though, got my White Mage to level 80 so I've been able to equip the poetics weapon for my Aerith glam, but honestly I'm not sure I'm going to continue with it. I'm sure part of it it lack of familiarity with the class but I'm just not enjoying it like I enjoy Scholar. Admittedly having a gap closer has been super nice (I managed to gap close into a tower on Cloud of Darkness the other day that no one had taken to avoid it doing a raid wide which felt good), but I miss the flexibility Scholar gives you.