If I remember rightly there was a Frankenweenie playset planned as well, early in 1.0's development. "Frankenweenie suburb story" files were included on the retail 1.0 disc.
Thanks for posting these Felix so amazing to see the behind the scenes of how the game is produced. Perhaps some of these video's could be added as unlocks in the next game, an extension of the dev art unlocks in 2.0?