If Labour truly consider themselves to be a government in waiting, Corbyn has wised up and is expecting another election soon, then surely he has to reshuffle the shadow cabinet shortly after the vote on the Queen's speech to make it more credible / palatable to the centre.
I know a few people who were tuned in to what Corbyn was saying but shied away from voting Labour due to the likes of Abbott, McDonnel, Thornberry etc.
I think you're more likely to see Corbyn double down and try to pull the centre further left.