To get this out of the way, this is a post I have made in the Feedback & Suggestion section a small while ago (The original post can be found here: http://forum.skullgirlsmobile.com/threads/should-a-pity-timer-be-added-for-exclusive-variants-from-character-specific-chests.650/#post-4455). I...
It's rather disappointing to spend several weeks grinding for theonite for 11 character specific relics and then to get nothing more other than bronze and silver variations. Now, I do understand that you shouldn't necessarily be guaranteed an exclusive variation every single time you purchase 11...