Sorry if this question has been asked many times before.. I tried to search for it, and it was too obscure to be worded correctly. If I'm writing a book that intends to move with a medium pace, and I plan to do it in third-person, would it be worthwhile to invest in a few sets of characters to switch between for POV, just to keep the story moving and plot points relevant? My main characters are people in a single group, but I feel that if I stay fixed to them for the entire novel, it will eventually start to drag and the pacing will have to "skip" to avoid irrelevant scenes, leaving odd periods of time without description that might seem jarring. This is not to suggest I would make the second group of characters a useless gimmick.. I would write in their end. Are they needed?