On Robert Webb, see here.
Jeremy Corbyn will be vindicated when Labour wins the Oldham West and Royton by-election; even a reduced majority would be par for the course when the previous MP had been of quite such long standing.
Then the tax credits cut will kick in, hitting exactly the people whose votes decided General Elections, and Labour will have won the 2020 Election, regardless of the Leader.
Corbyn works closely with a Deputy from the traditional Right, meaning that Labour is led by a balanced ticket.
Corbyn has appointed a Shadow Cabinet that is drawn overwhelmingly from the traditional Right and from the Soft Left, with a disproportionate number of Kendall supporters as Shadow Ministers generally. He has even given a job to Blair's old flatmate.
Blair was never remotely that inclusive, and nor would Burnham, Cooper or Kendall have been. People who are complaining are nothing more than spoilt children who object to anything for anyone else, ever.