I've always enjoyed Neelix. His backstory in one of the approved Voyager novels I always felt was strong and was really run to read. And Mortal Coil is a top 5 episode for me. I wish the "reset button" wasn't hit the following week, and the shows would have been a bit more serialized, but his acting in Mortal Coil was great.
I'd read Neelix material over Kes any day of the week. Even in the relaunch material, I love they include a touch of Neelix.