I am mainly going by with what they did with the ninja. In past mmo's and other examples we can go by new classes in the mmo genre has always come out over balanced. The hardest raids at the moment only accomodates two healer slots and unless the number is up to 3 healer and 3 tanks for the alexander raids then a job that was made around the 1.0 model feels like it will be the weakest link which is the white mage.

I am all for white mage having the strongest pure healing in the game but if the Astrologian is to have some appeal it will have to provide something that will make it wanted for the high end raiders and as I previously stated unless they altered raid composition to provide spots for 3 healers then that means one job will be left in the dust. And it is sure not appearing to be scholar at the moment.