I understand the point of this, but it's already in law that a judge has the discretion to impose consecutive sentences, so I'm not sure exactly what this is trying to achieve.
My concern, and the reason I'm opposed to the amendment, is that it would highlight an area in which it's codifying what is already in law, saying that the judge has discretion to impose a consecutive sentence, whereas other areas of the law wouldn't be so highlighted, and that difference might call into question the consistency in the code.
I don't think it adds anything, and therefore I wouldn't support adding this.