Should Gordie go?

Polly Toynbee writes that the time has come for Brown to go because he offers no vision.
I'd probably slightly favour him staying on. We're dead in the water it seems, so there's not much to loose either way. I tend to be in favour of giving people longer to turn things around, especially in football but in politics too.
For all of Toynbee's attack on Brown, she lacks what she attacks him for lacking: "vision". What should our new leader be about, never mind who they are. I think Brown missed a trick in not having an election, always have. The Tories were reinvigorated by Cameron's election, and I think Labour needs a proper leadership contest rather than just crowning a new leader