Inventory descripions
Something similar to monster memory, but for items.
I think the summary more or less gives the general idea of what I am getting at.
While examining your inventory, press A-Z to give you a brief description of an item, similar to that of the Greater Identify from ADOM.
It would be grand if there were descriptions for weapons (so that finally everyone would know what a scrugar is (-:, especially for artifacts, but these are not exactly necessary since it is a great amount of additional work.
However, the point is to give a run-down of what the adventrer knows about the item - does it cause corruption, does it strike foes with lightning, what are the effects and damage of a wand, etc.
It would be cool do discover the functions of a randomized artifact step by step, and have all your findings recorded in the descriptions. Say, you use a giant slaying weapon vs. a Hill giant and the appropiate note appears (or not, based on PER)