I don't think I've seen anyone talk about Brigid, so how is she?
Looks sorta like an AoE sniper, so might be useful in maps with a lot of drones even if she doesn't prioritize air targets. And she'd have some backwards range Exu doesn't have for leaking ones.
I have other targets to level for now (Ptilo E2), but is worth putting her on the to-do list?