This is very good, although it’s not quite the same use case as IMDB given that once a show has finished its run, it’s gone. I’m not talking about overpriced long-running musicals - which deserve entries for cast changes anyway - but most other productions around the UK. The NT digital/live/at home projects helps preserve a few really big shows, but most productions don’t film well and will only exist in our memories years later.

Archiving shows in this way is really important, however, but I doubt discussions would continue once shows are gone. It might be worth comparing and rating different casts and leads - “Was Layton Williams the best Jamie? This revival sucks!” - and perhaps coming up with a UK-wide awards system, as the Oliviers are by their nature, London-only, even if the show originated in Edinburgh or Colchester (disclosure: I was once an Olivier panellist) and the rest of the country could get some publicity.