FFXIV as a whole has well designed loot systems, with strong effort:reward ratio endeavours (a stark contrast to its predecessor for the majority of its existence).

However, the primal fights regress to a very primitive form of loot distribution: a random drop which may or may not even be usable by anyone in the current party. There are several issues with this system:
  • There is no guarantee that the player will ever receive the item they are investing time into attempting to obtain
  • There is almost always competition for the item in question, reducing the chances of successfully obtaining the item of desire to 1/16, 1/24 or 1/32
  • There is not much incentive to continue entering the battlefield after having received the weapon, increasing competition for the limited weapon drops available even further