I don't recall seeing this idea before (thought did saw some similar ones befoe), but it goes like this...
None-primary-proffessional-linked Armor Piece
What they are are one or two NEW armor piece (per proffession) that could be woren by all proffession, irregardless of your primary. They would be new armor piece, and not the exisiting ones. (Think of Pumpking Helm.. but with Stats) So for example, say there is a new Skull Helm (which will be linked to Necro) with stats of:
65 AL, +1 Death Reaping.
But it could be woren by all other proffessions, and not just Necro. (However, usually it would be ones who have necro as secondary that would gain the most benefit.) Also you can still only put runes of your proffession on it. Other piece of this type migh include:
Horn Helm From Warrior
Seeker's Mask From Mesmer
Wisdom Eye From Elm
Power Body Tatoo from Monk
Forester Boot from Ranger
This helps to customize the look of each character better (you see a warrior with skull head, you might guess he is a War/Necro) and prmote more build with their secondary, and of couse add new looks to help break up the army of clones.
*(It should only be one or two new armor piece, and not full set of share armor, nor de-primiarize the exisiting ones. For blance and modeling issue.)