Well, I wouldn't have minded that so much, but Gordon Brown pretty clearly ruled that out today. Whatever happens, the next leader of the labour party will be elected in the proper manner, Harman won't be a candidate, and Brown won't go until that election is complete.
Brown would have to die for Harman to take over now.
Then the three party leaders will be indistinguishable
Basically, don't dare to be over 50, grey, dour, or Scottish. Just young, pretty and bland. That's what this country wants and that's what this country's going to get.