This post on FFXIAH has a useful solution that solves all the problems posed:
http://www.ffxiah.com/forum/topic/28...es/16/#1737924
With this setup, people who have already obtained items for the 99 trial will not be punished, and those people (if there are any) who were going for the glow trial would be able to reclaim their gil. I would recommend 500 Ig-Alima or Botulus Rex kills for the Empyrean glow trial.
This would ensure a long-lasting and steady supply of the items that people need to upgrade to the NQ level 99 relic weapons.