The questions hanging over “60 Minutes” aren’t. Conversations with multiple people close to CBS News suggest “60 Minutes” has become the place where Weiss’ vision for the news division will ultimately be judged. Audiences don’t simply watch “60 Minutes” for who’s on camera. One veteran TV news executive described “60 Minutes” as an institution whose editorial culture has been built over generations. Bilton’s first correspondent class reflects a broader definition of who belongs on “60 Minutes.”