Did the possibility of a Brexit influence the shape of the new Commission?

The UK’s nominated Commissioner, Jonathan Hill, was assigned the financial services portfolio in Jean-Claude Juncker’s proposed European Commission. As this was viewed as a positive outcome for British interests, some commentators have suggested the threat of a ‘Brexit’ may have factored into the decision. Simon Usherwood writes that while a Brexit might not have been foremost in Juncker’s mind, it nevertheless played a role. He argues however that the UK should not expect preferential treatment and that the country’s relationship with the EU remains far from resolved.