I don’t think @Brian_Burch is worried about the frequency, for me it’s about the misleading effect of receiving 2 notifications that actually represent the same idea (comment + attachment).
By providing what is requested in this thread Asana would be resolving the double notifications issue, since the comment+attachment (or comment+image) will be 1, the notification will be 1.
So again, @asana1 when can you provide this?