If you switch to anything switch to a honest unbiased loot council who keeps track of its raiders and where they stand gearwise. Make decisions based on performance in raids possibly attendance level and be aware how well classes benefit from their 2ndary stats and set bonuses.
Win.
It's very hard to achieve this and usually takes some time, but anything based on numbers can be cheesed.
My guild has been using loot council for this whole expansion and honestly the main goal we wanted to achieve was for people not to pass obvious upgrades just to be able to have prio on 1 item they really want or get the heroic version earlier or whatever and we have achieved this. Upgrades drop and people roll on it and most of the time when there is like 4-5 people rolling on it, 2 will eventually pass (due to not a major upgrade) which leaves to pick between 2-3.
Note: We are a 25man guild with a roster of 34-37 people usually, so /roll just wouldn't cut it.