And they have put a focus on that this offseason with Lester and pursuing Shields, plus taking chances the past couple years on Arrieta, Turner, Doubront, etc. one of which has worked out really good so far. Their rationale must be that position players advance quicker (unless it is Sale) while they can add big pitchers through free agency or trades if need be.
The rotation is Lester, Arrieta, Hammel, Hendricks and ____.
The top three is solid, especially if Arrieta is legit. Hendricks I wouldn't count on to maintain last year's numbers, but one more splash this coming offseason) hopefully Price) and the Cubs have a pitching staff and a lineup (if Bryant and one of Baez or Russell pan out) no team will want to see on their schedule. The bullpen is pretty good already too.