There was a time with broadcast television's economic model when it made a lot of sense to spend a lot of money on celebrity journalists. But now, we're in an era of media fragmentation, which is only going to get more extreme.
If that's the way you're going to be growing your audience in the future, by innovating in terms of what medium you're going to be using, I don't see that hiring a celebrity broadcaster is going to help you with that strategy.