Well, that’s what they’re talking about (and talking about and talking about) over at Theatre Is Territory.
The only thing I’d like to add to this is that this was a hot subject almost exactly 10 years ago. When I was running Theatermania.com, I started a story on Macbeth by referring to Matthew Warchus’ advocating such a position.
And here is one of the stories that I read about this, back in 1998, in the Times.
What I’ve never understood is how far this moratorium would be spread and who would enforce it.