trisher
The problem is who is going to take on the job? It's a poisoned chalice. You can see the Tory big-wigs brains whirring, leave Boris in charge, dump him just before the next GE and blame everything on him. Enter GE with a new leader who promises to sort everything out. If things are too desperate run a lousy campaign and let Labour in. Then blame them for everything.
Exactly what I think will happen too. They know Johnson is a liability, but until election time it doesn't really matter. They will get rid of him a few months before the election; a new leader will make wonderful promises (again) which will be believed and Bob's your uncle, the electorate will fall for it again.