Finally have time to pay it forward. Interviewed on 10/31.
My prep was based on scouring past MSX debriefs, especially pertinent is the debrief from Shr3k04. 90% spot on with 10% of the questions directed to my background and application.
After receiving my interview invite, I reached out to an alumnus who was at my city's meet and greet, and his advice is to ensure your story and aspiration ties up with your application.
Just like any other interviews, make sure to prep a strong 3 Whys (Why MBA/MSX, Why School X, Why Now).
Be ready to elaborate further if your first reply wasn't clear, with >8 years of experience, you should have enough stories/examples to tell. I grouped my stories into themes, so I don't repeat or have to anticipate multiple examples. Think the typical strength/weakness/challenging situation/lead teams etc.
About 30-35 minutes of Q&A, and the last 10 minutes are your questions. Again, nothing extraordinary from all the previous debrief.