‘What the world needs now is a black and white pastiche of classic 1950s and 1960s sitcoms reviving two Marvel superhero characters who were last seen getting killed in Avengers: Infinity War and Avengers: Endgame,’ said… well, I was about to say: ‘said no one ever’. But clearly someone did, because this is what we’ve now got on Disney+: a bizarro series called WandaVision.