His policies would be rather the same, but since he will have come to power through a coup rather than through an election, he won't be such a darling of the American and European leftists and other governments would be a little more firm when he clamps down on freedom of speech, pushes through laws allowing him to rule by decree and engages in other such thuggish behavior.
He still would be the darling of American and European leftists. After all, Castro has been for over 40 yrs. Right now he's closing opposition tv stations and there has not been any criticism by the left. There is praise for his efforts.