A neat idea. Coincidentally, I was thinking along the same lines. Clerics, in particular seem to be in a patchwork of different armour. It's a shame when you finally have a complete set of Tolassian Chain the items you mentioned mean it is never worn.I don't know the feasibility of this, but an Armor Completion Bonus would be sweet, so (for example) you wear the Assassin Set you get a bonus (perhaps another dramatic add to Toxic resist) whereas the full Legion set might add a few extra points to armor. In some ways the Set bonus would need to be quite healthy as you'd have to drop the likes of Heroic Helm, Explorer Gauntlets, etc.