Their development system is leaps and bounds ahead of us. In the last three years total they've gotten double digit WAR from Altuve, Alvarez, Tucker, Bregman, and Framber, all basically homegrown (Yordan was a Dodgers signing but came up through the Astros system). Plus Jeremy Pena as a league minimum shortstop, Christian Javier. The Cubs best player the last three years is Nico, the only guy to put up double digit WAR over that span. Happ and Steele aren't far off, but after that it's all external (expensive) signings: Seiya, Cody, Swanson, Stroman, Taillon.