Copenhagen’s new opera house may not be a universally acclaimed architectural hit, but there is no question that its opening has invigorated the city. Moreover, operagoing in Denmark is clearly an experience considered to be worth savoring, as “arriving early and lingering late seem to be part of the experience,” a far cry from the dashes for the exits so common when the curtain rings down in New York and London. Could the jaded New Yorkers learn a thing or two from their Danish counterparts? “After a compelling performance at the Met, shouldn’t there be a natural tendency to want to share the moment with the audience, to bond, to cheer, to let out the pent-up intensity you’ve experienced with some lusty bravos?” One can only hope…