Blaustein has been used for at least two of the more memorable DM one shots I have been a part of over the years. Its a case where people think that if they are not the one who witnessed and partake then it must not happen.
That being said also, it is probably for the best that Bluebeard is not having a ball once a month either as it would happen too frequent to keep it interesting for the DM running it and playerbase who have seen it before. Macabre does run Castle Bluebeard very well though.
Its probably the one Domain that is implemented near perfection, I can not imagine how it could be any better, especially considering (Knas I think did it?) the person who made it was able to fit it all on one map, to really give the rocky shoal claustrophobia feel of the island.