Janeway made the right call, even though it was a terrible one. The only argument I've ever seen that might counter it is the opinion that Tuvok and Neelix died in the accident so aren't a consideration, but this would only hold true if the separation would have failed. Kind of makes you hope the transporter in any scifi form doesn't get invented, as they all seem to have their philosophical issues. I loved the problem presented in the Saga of Cuckoo series by Frederik Pohl and Jack Williamson, where faster than light teleportation sends a copy but you walk out of the origin booth. Not always the greatest thing, depending on your viewpoints.