1. Will dwarven adventurers be occasionnally taken by strange moods?
2. How do you envision invasions for the sake of an artifact to play out in Fortress mode? Will there be a goblin spokesperson of some kind saying "We must have X" or will it be psychically understood by all dwarves that these specific invaders want specific artifact X? Should the player yield, how do you envision the delivery of the artifact? Will there be something like a diplomacy screen, a specific job "deliver artifact to invaders" or just a dump job coupled with goblins pathfinding to your artifact and wordlessly taking it away?
3. Will megabeasts, night creatures, bandits and non-goblin civs be able to demand an artifact as well? In the latter case, will there be diplomatic consequences involved?
4. Will single adventurers target your fortress for artifacts, showing up as visitors, hostiles or otherwise?
5. Assuming artifacts get stolen by animals like keas, do they get tracked by the game so that they could end up in another site?
6. Will the item type of the artifact bear any relevance to the invaders, in other words will they be as likely to demand a platinum war hammer as an elf bone earring, assuming both were crafted in your fortress?
7. Do necro books and named weapons in Fortress mode count as artifacts in that system, or will they eventually fall off the artifact list?