I think a big advantage of random loot distribution, along with being easy to implement, is that it's basically immune to corruption (and even the perception of corruption). Loot councils, on the other hand, are only as trustworthy as the people who run them. On Live I was in a DKP-backed loot council guild where one officer would deliberately assign high-DKP, marginal upgrades to players of his class, so that he'd have less competition for best-in-slot drops. The officers also looted all no-drop rot loot on a 'dumpster' character, then later used a client hack to transfer the items to their own alts. Droppable loot vanished into the guild bank. When the guild (surprise!) eventually imploded, said alts and guild bank were RMT'd for the equivalent of a down payment on a nice house. Straight DKP is a lot less susceptible to corruption, though the system rules (e.g. item values, point decay rates, bonuses, alt policies) can be set up to preferentially reward certain styles of raiding. My point is that loot councils, and to a lesser extent DKP systems, rely on the honesty and competence of the officers. A /random system could be run by morons and Lrons and still be undeniably fair.