How cheering that you have seen through the hype that requires us to welcome any would-be 'icon' churned out by a signature architect, and tellingly pointed out both the mediocrity of Herzog & de Meuron's design for enlarging Tate Modern and the inconsistency of Sir Nicholas Serota in promoting it (AJ 27.07.06).
I had welcomed the original conversion of Bankside Power Station, as it (largely) retained Gilbert Scott's 'temple of power' - even though the Swiss architects chosen for the work had neither understanding of nor respect for his monumental brick architecture. But you did not mention that if the plans for the gratuitous ziggurat are endorsed as expected, we will lose yet more of Bankside, as the extension replaces over half of Gilbert Scott's symmetrical south elevation - including its central entrance.
Insensitivity and ineptitude, or more egomaniacal vandalism?
Gavin Stamp, by email