I am surprised that the unused space between the gate area and the DLR station is not used for an extension of retail space, for dedicated airline lounges and an enlarged waiting area. Should be possible without too much investment and the space is available. I know that there are plans for such an extension at a later stage, but given the unbearable situation airside at peak times, they really should fast track this before the background of additional flights by BA Cityflyer and Cityjet.