Bringing it back to this thread's point (before it turned into another discussion about how Man of Steel was totally awesome) I would say this is a major issue that needs to be corrected.
Marvel famously has had issues with certain directors. There have been high profile incidents of directors angrily walking away from the franchise with bad things to say about the studio. Too much oversight. Meddling behind the scenes. Forcing the director to compromise their vision. It's earned the company bad press and Kevin Feige has even said that he agrees they're far more difficult to work with than the usual studio.
But here's the thing about having some sort of oversight for your directors: you make sure brand integrity is protected. That is one of the biggest things Johns needs to address in this position.
The selling point WB used to contrast the DCEU with the MCU was that they allow the directors a greater range of creative freedom to do whatever the heck they want. That they are a studio for artists. The problem is, sometimes artists have stupid ideas. That's why editors exist in literary circles. That's why the New Hollywood era of film making eventually died out; people at the top realized giving a bunch of money and zero accountability to hot shot directors and letting them do whatever they wanted wasn't always a smart idea.
Sure, sometimes you get the Taxi Driver or Star Wars. But then sometimes you also get Heaven's Gate.
