I think Dan Jarvis is well worth considering. He lacks experience but that might be a good thing so long as he can fight back across the despatch box.
I can see no way yet in which the press can relentlessly attack him for the next 5 years as would happen to Yvette Cooper. They're already revving up for that by calling her Mrs Balls which is demeaning but also a millstone if the media forces her to defend him as well as herself all the time. She also hasn't stepped outside politics but I think she would make an excellent Chancellor.
I'm not at all sure about Tristram. I really go for him as a historian but he does seem to make some gaffes. Not impressive enough.
Chuka is very able but I think his sleekness will not appeal widely. Home Secretary perhaps.
Last time the leadership contest took so long that the Tories had time to build up the myth that the economic crisis was caused by Labour so maybe a quick change of leader would be wise now.
Choose someone who has had a life outside politics, is not descended from one of the Labour dynasties, and has done nothing in the previous Labour government which can be twisted around and cast up against him or her forever more.
We need someone who can build bridges with the LibDems. We need a party we can work with to oppose in parliament what is to come and while both parties try to recapture hearts and minds in Scotland.
In short! We're looking for someone who will perform well in parliament, come across well on TV, control factions in the party, appeal to people from London to Scotland and all points in between, articulate a coherent economic policy, reassure the money markets as well as people in need......