Hmm, well it might be true that it could help you during farming or heroics, but your guild isn't running Kara in order to make farming easier for YOU, your guild is running kara so your ENTIRE guild can progress to Gruul's and beyond, no matter how awesome YOU are at farming or heroics, that won't help your GUILD get into Gruul's, good lord man, don't ask what the guild can do for you, ask what you can do for your guild.  Let the tanks have this trinket