There have been a number of ST episodes that made me ugly cry. That one Neelix episode was one of them. I felt we could have gone deeper with Tuvok so that we as an audience would have given more of a shit about him.
Mortal Coil? Joking aside, Neelix became a lot more tolerable to me after Kes left the show so half his deal stopped being what a controlling creep he was with her. I'll admit he had some good episodes and solid character development over time.