Another good idea would be to run promotions on all 6 of the Chart Show music channels, it's going to get more people aware of them than a few trailers that are only shown on The Vault (and I haven't even seen these for a while). Maybe you could email him back with that suggestion. Certinally, Flaunt, Bliss & Scuzz are quite popular, so running promotions on there would raise a fair bit of awareness. And possibly they could trial showing the repeats on Bliss as well- after all, they show very similar music to The Vault. A few extra repeats scattered around the schedule wouldn't go amiss either. Gaz, maybe you could send him a link to this thread so he can read it and possibly reply here to our points.
One thing about the 1993-95 eps is that, as far as I'm aware, D2 is still in use, to a limited extent, in the TV industry, so transferring them would surely be cheaper than the older 1" tapes.