There is already a circuit split on shall issue CCW. In DC and in IL, judges have ruled there is a right to carry. In CA and another one on the east coast (forgot which one) judges have ruled there is no right to carry. The supreme court has refused to take any of these cases.
It takes 4 judges to agree to take a case.
In the one of the last cases, 3 judges said the case should be taken.
This means that one or two of the judges in Heller don't agree on the right to carry. (One progun judge may have voted against taking the case to prevent gun rights from taking a loss, we don't know for sure). We will need Trump to appoint one or two more judges. Any other "cases" on gun rights before then are a waste of time.