LOL meanwhile I have been wondering the opposite, which is why don't they just do a round-robin draining each other so everyone gets the cure? Stefan and Damon would be a problem, they couldn't both take it, but anyone who's been turned in the last few years... Elena, Caroline, Bonnie's mom, could all be human if they wanted to, and even one of the older vampires, as long as they're the last one in the line.