''I remember [former Who showrunner] Russell T Davies saying something to a fan once - the fan was saying, 'You should bring back the Brigadier and you should bring back Leela and you should bring back all these different characters'."
"Russell said, 'No, it's not appropriate sometimes. It's not always about the uber-fan... it's about the viewer and the new audience who are watching'."
"If you have a problem with it, write to the BBC," Barrowman said when his absence was announced. "Write to the writers. Write to whoever it is that is in charge because it has nothing to do with me."
[Source: Digital Spy]