Lo-Fi Games

Dialogue can currently grant items, and can require the player character to have an item, but there's no way of consuming (vanish into thin air) an item as a result of a dialogue interaction. Having something like this would be incredibly useful for modding. Also, a version that doesn't destroy it but that places it in the NPC's inventory would also be nice (but not always as useful). Modding in any sort of quest/task system is pretty difficult without this functionality.

I second this. It would greatly enhance modding capabilities, and thus could result in better mods and in turn longevitiy of the game post-development. There's already a good dialogue AI, why not such a (I presume?) simple thing?