Cast your mind back to 1997 people. Tony Blair had lead a crashing victory, John Major resigned from the Conservative party leadership promptly and in a dignified manor.
What came next, well the Tories put William Hague in the hot seat. Not the William Hague we have now, but a wet behind the ears version. No one credible wanted the job. Because anyone credible wanted to stay out of the crossfire while the party sorted it's self out. I wasn't till Micheal Howard took the reigns that things really looked steady.
My guess is that the next serious Labour leader will be a front bencher from the Blair era.