He was the heart and soul of that team. He truly was.
I did some background research on it, and found out that the reason Rhys-Davis was killed off was because Fox wanted to change the style of the show, make it more geared towards younger males, hence the addition of the redhead.
But what they also did was fire the original creator of the show, which is what caused the show to become suck. So instead of being young travelers, hunting down various parallel realities in the vain hope of finding their own, they become people bent on revenge.
For the first two and a half seasons, the show didn't really have an antagonist, it didn't need one though. They visited a new world everytime, got involved in some sort of adventure, and then they moved on. And it was great. They introduced the female version of Quinn in that first episode of the second season and that too was all sorts of awesome, then somehow, she gets forgotten? Never to come around again?
Suckage.
I blame Fox for this show failing when it did.