The new format is awesome! I done interviews like these before and I love them. I did the majority of it in spanish, but english is my first language, so I imagine that's why I had no specific "english" section. I think the best advice is to know that you're going to be thrown into 4 hypothetical situations. Only one of these situations has you as a doctor or evaluating medical situation.
There's no real way to "prepare". If you went in and knew before - I think it would be obvious. You can't over think it. I really think they just want to see how you naturally react to the given situations. They just want to see who you are and how you think about things in life. Not necessarily in medicine.