Has anyone seen an addon that does just this? I am looking to spend some time this week maybe cutting out this potion of gearscore into a separate addon. As I seem to favor some characters over others, so that at 50 i was wearing very outdated gear on a character and looking at instancetimer, I had other characters loot a few items multiple times. I am thinking of a simple very cached slot itemid for each character in my group and just showing five lines in every item tooltip.

Master Loot Upgrade Mode - This mode is an excellent way to assist your raid in increasing their overall level of gear as quick as possible. Whenever you mouse over an item the tooltip will show how much of an upgrade in GearScore that item is for each person in your raid that can equip that item. Prefect for loot-council type raiding guilds and also excellent for leveling characters in helping to choose which item to pick from quest rewards.

http://wow.curse.com/downloads/wow-a...gearscore.aspx