Loving the game.. It's a must. One thing I feel that must have been asked for is an "ingame" loot guide.
Perhaps a simple link to an item that tells you which Hood/Mission the item can be gotten from (rather like the links on bosses that tell you what they bring to your mob, or the Assignment rewards click on image type thing).
If not in game, perhaps on the forums?
Click the item, and it will say which mission it drops from.
This of course can not be done from clicking peoples' inventory items, but rather missions, assignments or bosses where they are needed.
Or did you mean something else?