I love audio podcasts, however I usually save them for a long train or car journey to listen to a load at once. I think it would be a fantastic idea to do one for the general story and how we’ve been progressing. I have to admit, they are a bit of a niche - but people who love them, really love them!
A good, more mainstream alternative, is YouTube video podcasts with the same theme.
You could also do both, and make the YouTube video podcast short and sweet - appeal to the masses, while audio podcasts can have more detail for people who are interested.
A personal interest of mine lies in the technology field. I’m a software engineer by trade, and I absolutely love reading tech blogs such as Netflix’s (http://techblog.netflix.com). I think it would be amazing if some of Mondo’s engineers were to have a similar blog where they talk about interesting challenges they’ve come across technically and how they’ve overcame them. It would make for a really insightful and interesting read, especially for engineers like myself who are relatively young to the trade.