Having playoffs in college football would add to the overall suspense and drama. It would allow for more close, nail biting games. It would also allow for the underdog to make a run through the playoffs and win the national championship, which everyone know would add a ton of drama to college football.
Everyone loves to watch the suspense and drama of playoffs in professional sports. Of course, playoffs would make college football more popular. These highly competitive games would add even more suspense to the football season because of their importance for the championship. Fans would clearly enjoy watching the best teams fight it out on the field.