I'm less interested generally in the cinematic qualities (I don't care if it's essentially just a taped play), and more on the quality of the script. My lack of interest in early film stems from the fact that it's rarely telling the kinds of stories I engage with; this one sounds like an exception.

Sadly, I don't know that I can get hold of it. No sign of it existing on DVD anywhere I can find, nor any streaming sources. Where did you find it?