Necrotic healer is something I've wanted in the game for a while! I play one in a (final fantasy related) DnD campaign, and it's extremely fun. The mechanics for it are all really unique and creative.

Realistically though I have a feeling they'll go for something tech-y or something more realistic like a combat medic or chemist. I'm the kind of person who loves mage healers, so I'll still hold out for a necrotic healer, but I sadly doubt it will ever come to life.