I don't think it is as far-fetched as many believe
Well their styles seem to compliment each others very well. We saw a glimpse of Knight on a line with Spooner and Caron in those three games with Providence and it looked promising. Just need to hope Julien sees the potential of a line like that too.
Also, I find it odd that people always list Spooner as being 5'10"; I'm 6'2" and don't over exaggerate my height (it's what my license says and some people think I'm 6'3" or 6'4") and I've stood next to him. The top of his head is just above my eye level. More around the 5'11" or 6'0" mark I'd say.