There are now HD versions of many movies that were riffed on Mystery Science Theater 3000. I've edited versions for myself where I cut the new HD video into the MST3K episode, leaving the host segments in standard def, but the movie parts in HD, with the show's original audio so you can hear the riffs. I'm suggesting this as a Rifftrax thing because Shout Factory has MST3K, but probably wouldn't be able to get rights to movies from other distributors, so maybe Rifftrax could be the middleman. For instance, Full Moon Features has Laserblast, which might be cheap. And I'm a non-union Canadian so I'd be a cheap editor to use!