This is a simple solution for dumb OP.

1. Lock Chest 2 and 3 for the highest Ranking Member, Chest 1 for the lowest.
2. Only put the highest Valuable items in Chest 3. Chest 1 for JUNKS and 2 for Medium Value.
3. Thieves are nice to clean the JUNK off Chest 1 that gives headache so I don't mind and give a fk.
4. Again like 1. GOD DAMN LEARN TO LOCK FC CHEST BY RANKS!!!!
5. Only FC Leader is allowed for Gil Withdrawn.
6. Shards/Crystal/Cluster, LOCK for Highest Rank only! or Medium and High Rank.