Brad,
I've been listening to your podcast for some time now. It goes without saying I've learned a lot. If I were to categorize your guests into a group, I'd say they are all long experienced brewers or persons with many years experience in their field as it relates to brewing. As I listened to a few early podcasts tonight and read some of your early articles, I think it would be interesting to hear from someone who's become a very solid brewer in the recent past, who hasn't yet forgotten their early experiences in brewing. Perhaps someone who knows enough about brewing now to have been a great help to themselves had they been there to mentor themselves a few years back when they began. I know I sort of fit that mold, in that if I had the accelerated learning curve (knowing then what I know now, at great expense I might add) my brewing would be / could be, years advanced from where I am now. Sadly, I'm not guest material.
Maybe such a podcast is a pipe dream. But I think you get more new brewers listening in than you might suspect, and a back and forth exchange laughing at past failures, with a hint or two how to avoid same, would make for an interesting show. It might also be difficult to syllabus.
Cheers.