Hmmm, I don't know if this has been asked yet, but do vampires necessarily require fresh blood? Of a sentient being? Because merchants have barrels and barrels of various types of blood, but I don't know a single use for any of it. Maybe I could, in future, stock up on it for the sake of my potential night-dwelling population?
I believe it's the actual drinking-warm-blood-from-a-sleeping-person thing that quenches the bloodthirstiness, not just ingestion of blood per se.
Will you add bleeding out animals into barrels to the butchershop chores?
Will harvesting blood from forgotten monstrosities be possible via such a job?
Will symptoms (*)syndromes be carried by blood harvested into barrels?
1, 2: there's no timeline for these features. Definitely not in this release.
3: If the slaughtered creature has a syndrome attached to its blood material species-wide, or if the creature is a historical figure and had a syndrome attached to its blood via interaction, then the drinkers will be subject to the syndrome. If you mean a syndrome of which the slaughtered creature is a
victim, e.g. a cave spider injected venom into the cow's bloodstream, the contaminant (venom) would not end up in the barrel unless the code specifically checked for it.