Playing with the simulator it gives an option to see the difference in score when adding a new credit card. I assume it takes into account the new card changing your AAoA. But, I would assume a larger component is the simple change in your available credit and thus, new utilization %? If that is true, then could you use that same option to see what new credit limit increases would do to your score? Obviously, none of those are exact indicators but a generalization.
