I have listened to your podcast occasionally and I really enjoyed it. I can’t really say what you can do to improve it as I personally think it was very good. I guess there are just a lot of podcasts out there and maybe it was an issue of discovery. What I listen to depends on my mood but when I was looking for a development related podcast yours was definitely one I would go to. Sorry if this is not a very helpful comment but I just wanted to let you know I appreciated your work.
Maybe I'm looking into this too much but when I take a couple of other replies and yours together in the same context my takeaway was when you want to hear about the gory details about something development related you'd listen to the show. To me that says from a technical standpoint the show is good but you're not listening to it to be entertained specifically. You may also not be listening to it while doing something else because if technical information is what you're after, you might be focusing fully on the show?
Even if my assessment of your specific case is wrong, it got me to think about a couple of new things such as "what type of mood are people in when they tune in?", "are folks listening to this for pure knowledge, entertainment or something else?", and "what might someone be doing while they're listening to the show?".
Yes I would usually be walking or driving when I’m listening to a podcast. I believe I discovered yours as I was working on a few Django projects and I wanted to get a feel for other peoples experience of using it in real life. I think there is value in the content of the interviews that you wouldn’t necessarily get from just reading on the topic. It’s interesting to hear all the different kinds of real world projects that people are running and building.