User blog comment:Twilight Despair 5/Supernatural Failures/@comment-4632123-20130624013123/@comment-5619706-20130624035817

They could have used her in the Purgatory scenes. You know, like showing her true form with the Medusa-like eyes, some draconic wings, and a long scorpion tail. Think Angelina Jolie in Beowulf, but with dragon wings and medusa eyes. She could even boss some of the Leviathan to hunt down Dean and Castiel; when a Levi challenges her rule, Eve gives the Levi the Medusa glare treatment and forces the Levi to bleed and revert into its amorphous form (not kill it, but seriously disable it). And get this, she doesn't care about giving up the monster tablet (Yes! It exists in this headcanon of mine), but she just wants the head of Castiel on a silver plate.

Then, Naomi's angels arrive to take Cas out. One angel stands between Eve and Castiel, but Eve just glares at the angel and roasts its wings out on the spot, and, with her dragon-wing talons and scorpion tail, casually stabs and rips apart another angel, thus explaining how the angels lost their lives.

Throwback and more lore to an interesting character? Check.

Awesome supernatural monster mash? Check.

Further backstory to Castiel's escape from Purgatory? Check.

A wee little bit more clue on the relationship between Levi+Eve? Eh, maybe.

More tablets to meld with the major arc? Check.

Character conflict of interest (Castiel's safety vs. Acquiring a Tablet)? Check.