Re: Janeway in the cases of Quinn and Tuvix
I would instead argue that in Tuvok's case, at least, he knew the risks when he joined Starfleet. The lines may get a bit more blurry for Neelix.
It was the best of Trek, it was the worst of Trek...
"If I lean over, I leave myself open to wedgies, wet willies, or even the dreaded Rear Admiral!"