Despite some complaints about losing this or that I think that resetting the situation might make it easier to regrow the site in a more consistent and financially stable way.
I think the Slate thing is interesting. They have their own podcasting thing going on so this would kind of be separate section and relatively unique. I like Slate's political gabfest quite a bit and the Slate-ish contrariness, while annoying at times, does provide a decent chance at keeping the bhtv content more ideologically equitable.
A couple of things sprang to mind when it comes to the hardware end of things. I assume this was thought of but if keeping things simple and robust with the video is so important why not ship a cheap tablet to the principals instead of relying on mac/pc/webcam combo ? You are stuck with a fixed focal length ( no zoom ) but just think of the tablet as a videophone with the attendant ease of use of such an appliance.
As for the regular diavloggers coming up with either their own topics or just links to when certain discussions start ... seems like a great idea (don't take it personally Aryeh, this is just business

).
One thing that I am not to sure about but I assume will be the same is dingalink creation. I take it Aryeh used the same system we use but if there was an "app" (web or otherwise) that made it even easier to scrub through and find appropriate timecodes that would reduce the time needed to create the dingalinks.
just spit-balling here of course.