Check our conversation:
LTGH and Anachrons Conversation.
Btw, I am making itemsets aswell, which have bonuses if you have all items of a set. But that only if you have the FullScreenUI and all of the items equiped, or if you have the normal UI. This will take a while.
Also, I am working on the stacking part, on a save/load system, on an advanced seek systems for the items and last but not least, a very nice addon. You can now enable BonusStacking, meaning that charged items with bonuses do give bonuses multiplied by their charges. 2x Clawns of Attack +6 give +12 dmg, and so on. Thats just optional and can be disabled if you wish.