No thanks. Stop running with shady PUGs and you'll never have to worry about 'loot rules'.
Guildies and friends are awesome. Or run in with established channels of like-minded people. There isn't (in my opinion) a reason for them to program something in to distribute loot. That already exists. When you pop a chest, there is an internal 'roll' that decides what loot you get. If you decide to offer it up for others, you can do so by selling, rolling or just randomly picking a name in the party. It's your loot to do with what you will. Adding a mechanic just mucks up the process.