I've seen a few users tag imminent_death on posts with vore, but nothing else indicating death. See post #4089271, post #3333908, and post #4083782.
Is this correct? I don't personally think imminent_death should be applied unless digestion is actively shown or heavily implied, but I can also see how it could be considered the default. If it is correct, then there are a huge number of posts it should be added to.