Looking at the mechanics, the Uber Ghouls' write-up doesn't quite match up to what we see in the books. Specifically, I'm referring to their recovery abilities. In White Night, they get blown to pieces, then start literally pulling themselves together moments later. Even Mythic Recovery doesn't let you do that in the middle of a fight, even if all the injuries you take short of Extreme are gone at the end of the scene.
So I'm thinking of a couple ways to handle this:
1. Instead of them taking consequences, they're simply taken out by massive damage but, owing to their nigh-unkillability, any kill that doesn't destroy their mass (like Ramirez' shield liquifies them, or burning them) means they can come back into the fray a turn or two later.
2. Replacing Mythic Recovery with outright Physical Immunity, and doing the 'limbs blown off and reattaching' bit as flavor. So, short of those attacks that disintegrate, you can't truly take them out, only maneuver them long enough to set something up or get away.
Thoughts?