Rabbat's Proteges

This deck is also missing the Coven.

Any thought to adding an anarch angle to the deck, for more blood gain options

hospital food
anarch free press
status perfectius fast reaction for Rabbat
infamous insurgent votes and extra untap

are the only cards I would add to library

hell for leather and maybe smash and grab may have a place as well.

For a totally different deck you could run

hidden lurker
amaranth
lay low

with the aforementioned cards, though that seems to cumbersome.

Rabbat being Red List, Rebirth is better than Lay Low for her and does not require any setup. But as you said, it's a different deck.

Rebirth is an action modifier only. Lay Low is also a combat card, infinitely better with Amaranth.