Fun fact: The Cubs have played every NL team in a playoff game/series except 3: the Brewers, Phillies and Reds. While we can't play all 3 of them, they are all in the playoffs so we could potentially check off 2 of them if we advance far enough.
Furthermore, by playing the Padres, we've played 11 different NL teams in the playoffs since 2003 (as opposed to 1984 before this series was set)