How do we know that the Cubs development system is horrible? Are there many examples where players that the Cubs failed to develop were subsequently developed successfully in other organizations If so, how does that compare with similar examples in other organizations? Could the big problem be in identification of future high quality ML players (pitchers in particular)?
I think this is where D+D is better evaluated as a combination. Otherwise, we don't know where failure lies. Did the draft/IFA deliver zero talent, so that the development guys have no chance no matter how good they are? Or is draft/IFA identifying and delivering reasonable talent, but development is wasting it? Or both?
Your question suggests perhaps the problem has been on the draft/IFA side, because there aren't many examples of guys who developed once they left the system? Some of the left-the-system guys would be Soler, Gleyber, Eloy, Godfrey, Cease, Paredes, Candelario, Vizcaino. Obviously several of them have developed greatly since leaving the Cubs, but don't see that reflecting on Cubs development system. Theo really coveted Steve Wilson and Quintana and Davis, so he traded whatever minor-league talent he had to get them.