I'll tell you, I really like your interviews with the game designers. They have been really interesting.
The interview with Aventine Miniatures was good, but it would have been more interesting to hear more about the processes, whether casting, sculpting, or something else. The WWPD podcast has had some "behind the scenes" interviews with Battlefront that, to my mind, have been really interesting. Maybe I am a process geek, but I think it is instructive to gamers that all of this stuff does not just happen automagically.
As I only started listening to your podcasts I really don't know what other type of material you are considering. Having an interview every time might be a little hard to pull off.
If you go into reviews, try to use a structure to how you deliver the information. Most seem to just ramble on about this or that with the product. What makes the system unique or "realistic" or fun; something compelling as to why we might want to check it out.
Keep up the good work. I really enjoy your show.
Dale
daleswargames.blogspot.com