I think that is a brilliant idea. My mind is spinning with other applications.
I know some will say you should just vblog the whole thing. There are barriers.
Bandwidth is still a constraint.
I also think that each media form takes more work. Blogging is easy and can be done in minutes. Audioblogging harder to get set-up and takes hours. Vblogging is even harder to get going and takes even longer to create and publish (days!).
I think each of these requires a minimum level of skill and presentation with the same ascending order.
I love this podcast/flickr hybrid because it lets you add another level of richness to your communication without the overhead of going to the next form.
Still thinking of ideas…