I know Unit >>>>> Type and all, but I'm not 100% convinced this ol' girl is terribly usable in any place where you actually need mitigation....Behold, those HP's!:
Once I unlock her extra skill, she only gets +20% to stats.....She *needs* her unique sphere or it defeats whole purpose I'd use her for (status cure).....also, if I'm using her for status cure, it only makes sense for me to equip the status immunity sphere in her secondary slot.
I just threw a Medulla gem on her to see what she'd look like with +20% stats and before leadership skills she'd go into battle with only 7,490 HP's...which is ~2,500 lower than everybody else. I could drop 30x HP Imps on her and she'd still be 1,000 HP's less than everyone else....but that is a lot of bloody HP imps and frankly, I think she is in line behind other characters as it is
I could sphere frog her and fodder/burst frog her up properly without it costing me too much, but I'm not sure I'd do more than that. I really wanted her in anything better than Oracle - but even so, I didn't realize her HP's would be quite this anorexic.
Edit: Or to put it another way, she is the lowest HP 7-star I have, and her unique sphere prevents her from being able to go with anything more than +20% from spheres.