We can help get some of these converted by gently pushing. For example, I converted season 1 episode one over just for practice and reached out to the writer to see if they wanted the file. The writer wrote me back about a week later, asked a few questions and then realized that they had already been contacted by FSHSchmo. That gentle inquiry by me was the pebble that pushed it over to the file being released.
The files themselves are pretty easy to convert for personal use.