User blog comment:Deshiba/Item Concept/Rewor: Aura Overhaul./@comment-2019837-20130731132748

The problem, design wise, is, that having sole aura and non-active, thus non-interactive items that provide a  bonus to several others can be extremely unsatisfying and have harsh counterplay. It gives it a rather stagnating feeling, which is why there are few items.