Ok so in Dungeon you have the round robin loot distribution.
This is exploitable for the clerics to use to their advantage -or anyone who is not a dedicated DPS/Tank-. It's easy to keep track of things like chemicals, and intentionally pick up the valuable ones every 4th rotation to the good drop always is given to the same character.
Was also asked to provide any solutions I could think of, and the best one I got is dedicated loot. The loot is automatically put into the characters inventory and distributed by the system. This means
1: noone can manipulate the loot distribution
2: Any items without room for in the inv could be either dropped, or put into a temporary storage [the mailing system would be a great choice but it's not in-game].