Honestly, a small part of you was considering leaving one of the other two left alive but trapped somewhere, preferably stuck in a coma and with tattooed variants of a ring of sustenance and ring of regeneration just so you could keep harvesting the thing for these absolutely wonderful crafting materials. Especially since without the extradimensional blockage, due to the Dimensional Anchor dissipating on corpse, you could tell there was certainly some form of extradimensional effect manipulating space, meaning there was far more ichor than would be possible even if the original were to have been completely and utterly hollow. Maybe both, if you could manage it.