TL;DR
Keep Delilah’s ability to revive, and give her the ability to revive and heal her team.
The main feel of how I would like Delilah to perform is a reviving healer that has a good, respectable chance of reviving her team. I have a Delilah emblem’d to node 15 with Attack/ Defense/ Health of 752/ 815/ 1457. And, on offense, often enough she revives ready to heal, but there’s no team left for her to heal, so her tenacity as a healer isn’t quite there anymore. I want her to have that “Yeah! We’re back in the fight” feeling on offense.
Now, I’m well aware that Delilah’s current class is a fighter and no costume has ever kept the same class of the original version.
So, I would like Costume Delilah to have some sort of mechanic in her special or maybe a new passive that keeps her stubborn revivability. A mechanic on par with Tyr’s revival part of his special: “If the caster dies during the next 4 turns they are resurrected in the beginning of their next rurn with 32% health. All status effects and stacks are removed when the caster dies.”
I would also like to see her gain the ability to revive her team with a 30+ % chance at 25+ % health.
With this train of thought being more about offense and the likelihood of players color-stacking with other yellows, I think it would be interesting if she gains X % of her special becoming undispellable for each yellow hero on her team. That way she becomes more potent with yellow mono-teams, but not too OP on defense because why would you run a mono-color defense when a mono-purple team could easily take out your mono-yellow defense.
Other nice features to sprinkle on her special: dispel enemy buffs or cleanse ally debuffs, reduce X % of mana or reduce mana generation by X %, or a heal over time/ an over-heal over time/ moderate mana gain over time.
Lastly, what kind of new class should Costume Delilah get? I think something that increases her survivability, thereby, making her tough to kill. Something like Rogue or Paladin.