My focus with Reisa is, in general, healing and support. I started off as Conjurer but swapped to Arcanist because it was fun pre-30. My plan is to try playing Scholar and White Mage equally once they're both 50, so I can learn which I enjoy more in later content. (And maybe I'll have Bard for an alt class, one day...but Astrologian will be out before I get to that, knowing my pace, and then there's no telling how things will go!)
While I do have a personality and general background in mind, I've yet to try roleplaying as Reisa. Once I've been through the storyline, perhaps?