What did the Cubs learn from another season of contract extension drama

CHICAGO — Cubs president of baseball operations Jed Hoyer isn’t afraid to make difficult, unpopular decisions. That disciplined approach has largely defined the organization in the two-plus years since chairman Tom Ricketts elevated Theo Epstein’s top aide to run the show. Hoyer wouldn’t force it just to put a new contract extension on the board, but it’s impossible to ignore how previous negotiations broke down, pushing the Cubs down this rebuilding path. If it seems, at times, the narrative surrounding the Cubs involves a fair amount of hindsight, that’s because that’s exactly what people in the clubhouse and the front…