'To be honest, it's not atypical for Neil Gaiman to take something innately complex and shape it into something incredibly crass and attention-grabbing: if you can turn Death into a goth pin-up, then the TARDIS isn't going to stand a chance. The obvious thing to say at this point is that in a phase of the series where the only impressive thing the Doctor can do is flirt, and where every scene has the emotional depth and maturity of Han Solo saying "I know" before being pushed into the carbonite, the TARDIS was inevitably going to become the latest in a line of inflatable dolls posing as female characters.'
Also, don't miss his great comment about spoilers:
'Possibly, just possibly, the best way to deal with "spoilers" is to make stories that remain watchable even if you know what's going to happen. Rather than, say, stories that depend on relentless story-arc twists and idiotic clues as to what's going to be at the end of the season. Y'know. Just a thought. From someone who knew the ending of "Genesis of the Daleks" several years before he actually saw it.'