User blog comment:Zoether/Do you want this to be to the last season with the original cast?/@comment-5928665-20131002231330/@comment-24600224-20131006013146

I think you're confusing "potential" with "filler". Just because a character has been filler in past seasons does not mean that they don't have unwrapped potential. Nobody thought that Lindsay would be a leader, for example, or that Zoey would not be the Damsal in Distress for Mike.

The reason that these characters are constantly in the background is because they were always filler, and the reason why they were fillers is because nobody gives them a chance.