So according to the PAX East Interview, Astrologians 2 stances will change from healing to barrier as we know, but they're kind of OP as of right now so they said they are going to put a limit on how frequently you are able to transition from one form to the other. They also said that the divining cards can be used immediately or combined with others for more powerful spells. They will not fill the role of a WHM or of a SCH. They will fill their own role. They are designed to be an intensely mechanical, busy class. So they will have to use both forms appropriately and effectively to be good healers. If there's info you missed. It's all in the link below.

http://www.reddit.com/r/ffxiv/commen...ast_interview/