The problem isn't whether or not they can heal we know that they can heal perfectly fine; however, compared to their peers they are the redhead stepchild that nobody wants in their parties because everything they do a whm/sch combo could do it much better. Sure the Astrologian looks great, and I can see why Square Enix decided to make them a hybrid in order to keep the perfect synergy between whm & sch; however, what they ended up doing is putting Astrologians in a awkward spot because if your a hybrid you can never be as good as a specialist automatically preventing you access to many parties unless SE decides to break the job and make it overpowered. Instead I think that the Astrologian should receive a redesign (Make their healing style unique) and make the cards the secondary mechanic of the job, this way they could compete with the specialist without being branded as the useless hybrid.