I don't know how many times I've picked up an item, seen that it's Ancient and has high rolls, and wondered, "Is this worth keeping? Is it worth putting in the Cube? Is it part of a build that anyone uses?"
I would love to be able to search for an item by name, and then see the basics (stat ranges, type, etc.) and below that a list of links to builds that the item appears in. This would be especially useful when getting items for classes you aren't currently playing (and may have not played at all yet or recently).