epgp tracks it and announces who rolled and what did they got in guild chat - inluding how many rolls left player has albeit i alwasy seen it as nice side info not something which should be tracked.
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there is no way telling if guild is dying - it really can happen overnight - in brf mythic one of guild that one of my friends used to raid with got 2 new mythic bosses in one week and then suddenly overnight imploded -_-