Nice to hear your next podcast is coming up soon. One thing I like about them is there informative without being too dry and a bore to listen too. This is a hard thing to accomplish especially when theorycraft topics come into play. The main reason the more popular ones like the instance avoid topics such as that.
I was thinking your next one should be a summary discussion of the great "Tanking Topic" threads that have been very well done. Hopefully one before 3.1 and another podcast post 3.1.