Tate Britain could be our greatest museum – if it only loved its treasures

Its current displays aren’t just terrible. They turn the story of British art into one long joyless slog through brown and grey sludge. The proposed rehang won’t fix thatIn its 17 years of existence, Tate Britain has practically killed British art history. Drawn from the biggest collection of British art in the world, the gallery’s permanent displays – or, more accurately, incredibly impermanent displays – have achieved such a rare cocktail of superficiality, preten