I think the game is good and I have heard others here say that aswell but the problems I have seen have been:

1) They dont understand it from the tutorial, well I did but I guess a lot wont.

2) The need to travel to the GS to play it, well thats the same as Chocobo racing and thats been fine.

From what I saw on WoW their battle system seemed dead too and I never got in to it, I did not find it fun and I felt it was tacked on. This however seems fun, its MOBA style should be more popular than turn based but if its not than I guess a turn based would suite the FF crowd better.

Im just really worried its gonna go the way of the DX11 client(has lots of graphical problems) and be abandoned.