Please open a new topic and tell us what you think is broken about unique items.
And yes, I do like the idea that unique items could act as armour, and should provide the same protection effects.
While I don't think unique items are broken as such, I do think they are less interesting than they could. Adding armour as unique items would increase the interest in unique items, while adding them as a new, separate mechanics would decrease it.
In a nutshell, if a separate "equipment" mechanic is added, then unique items only become equipment without actual bonuses.
I also think that if unique items gives real protection, then you will see the price of unique items rise significantly compared to now.