Applications include (but not limited to): trying to find an item when following a userguide/changing characters and the item is not on the recommended tab. Also would be a solution to quickly finding items and not needing to refind them when more items are added/taken out
What we really need is a visual tree of what item leads to what like in DOTA, LoL, etc. Especially with all the temporary items having similar names and icons.
Bonus points if it allows you to type "Lifesteal" and show all items that are capable of lifestealing, or duration - showing all duration modifiers etc