I don't think a Youtube production representing Bitcointalk is a one man team so to speak. Its probably best to have various people involved, including people that are on screen, and off screen. At least, to assure we get regular content out there.
True, but this requires a budget and constant attention, not even two people, but three or four.
(If you really want to build an audience of 100,000 from scratch). But again, as I mentioned, this should be a channel with its own broadcasting style and weekly broadcasts targeted at the general public, then in the end the effort expended will live up to expectations.