So since the addition of new raids since Vault of Glass the challenge icons for the raid in the modifiers area have a specific icon for the specific raid, but for the Last Wish, Garden of Salvation and Deep Stone Crypt raids the challenge icons are all the same instead of raid specific.
I personally would like that to be changed so that the Last Wish, Garden of Salvation and Deep Stone Crypt raids all have their own specific challenge icons to keep consistency with the more recently added raids.