The moment I started playing it at the PS3 launch, it firmly supplanted itself as the WoW replacement I was looking for given how much I disliked the direction that game took(and continued to take).
Definitely a timesink though, largely for its narrative-driven progression. Something I really appreciate, but also can feel bloated and overstuffed with repetitious cutscenes talking strategy, planning, flashbacks, etc... Even as someone that reads it all, even my eyes glaze over the text bubbles at times given how dense and kind of repetitious it can read.
I do wish they could spend a bit of time re-balancing some of the old content though. S-rank hunts, old dungeons you visit for dailies, etc... I mean even with level/gear scaling, you just wipe the floor with much of it. I love that they find ways to revisit the older stuff for beneficial means, but at least spend a bit of time providing a way to make it feel a bit compelling instead of a total snoozefest.