but I think that it would have a vanishingly small audience - I've done scenes in EME pronunciation before and it really is a specialist's kind of geekery.

It's a good point -- while I thought the period-pronunciation plays at Pennsic were fascinating, they were also not at all easy to follow. (And I *do* understand the period English accent passingly well.)

So I would guess that period pronunciation, while very educational, is in some tension with the desire for the audience to have an involving theater experience...