I searched 'group with more heirloomer's' nothing came up.
Firstly this trick is for Lever's since the more heirloomers in your group the better your group is gunna be
Well this is more a Obvious trick which not many people think of, but i found it it out while multiboxing and am 90% sure ( so i would like some people to test it out) that this works,
Basically i found out that it helps to que as a NON leader of the LFG system,
I believe this is either (which i think is the most likley) is that normal heirloomers believe they are experienced so they can lead, hence if your not leading you group with them,
or which i think is slightly less likley, Blizzard see u have heirloom or high gearscore ( and yes they do see gear hence sometimes u can't enter dungeons ie: The three new heroics ) as a leader so are qued as a heirloomer.
I hope you understand were i am coming from.