Paul and Mylène, thank you for these pre-show reports. You provide some cues which fuel my excitement. Given the title of the finale segment, I guess that we may have an all kamuros finale. I also guess that the "ring of fire" may be a very large flame effect which is going to warm up the audience.
It's funny to know that Big Bang (!) distributes Grupo Luso Pirotecnia products in North America and that "The Good, the bad and the ugly" is the opening segment. It was one of the segments of Grupo Luso's show in 2008!
Fred | 
