The problem though is even though you could restore the original people you have to destroy the new life that was created out of their DNA. It's a unique situation were you can't really win no matter what choice you make because someone has to die no matter what. It's a Koboyashi Maru of transporter accidents. The reason why I would side with Tuvik is he exist and that is a fact. Tuvok and Neelix being brought back to life is only a theory and you don't even know it will work. The other thing is with Tuvik alive that gives you time to maybe find another option such as downloading Tuvik into a android body or a hologram like the Phage woman the doctor fell in love with. I even wonder if Tuvik would have a Katra like Tuvok I assume does since he is Vulcan and then you mind meld his consciousness into a cloned body.
Jason
You're definitely onto something there.