I wouldn't really listen to it. There are some pretty amazing podcasts out there, and I generally avoid them. I don't think a VGChartz podcast would change my ways.
That isn't to say it isn't a good idea, or a noble undertaking, because it is. It's just that I have no real interest in the result myself and I am not really sure there would be an audience for such a thing (though I guess that's a secondary thing).
Best of luck to you though.
This is invisible text!