I don't think anyone will disagree that you build your foundation through your milb system. But, I think for the most part, that foundation is pretty well set. Could probably see one more starting pitcher emerge this year, but there is room in the rotation, Darvish won't be blocking that player. At some point, you also need to add walls, and a roof. Otherwise, no matter how impeccable your foundation is, it's still just a big hole in the ground. Do you have any examples of recent WS champions who were solely built from within? I'd venture that most, if not all, eventually added a big time piece or two to put them over the top. One might argue that they are still a year away from really needing that piece. And, typically I might agree. This isn't a typical off-season, though. With many of the big players seemingly sitting this one out, to reset the luxury tax for Harper and Machado next year, this might be the only legitimately reasonable chance that the Twins will have to add the best FA available.