Other improvements could be:
- possessions for real, i.e. a deceased dwarf or other entity takes over -
- secretive moods for real, i.e. the dwarf stockpiles stuff in his room without notifying the player- - Multiple moods at the same time in the same fortress (Give here that GCS silk thread! I saw it first!)
- Components for the artifact based on the dwarf's personal likings
- dwarves that rip apart existing objects or mine the stuff out themself if there's no other option
- the dwarf does some strange things as a kind of ritual or creative process during the making of the artifact (eg. running circles around a statue, eating sand, washing, ritual sacrifices, kissing an elf - or slugmen, ..)
- longer-term moods: they shouldn't all be instant microwave artifacts. Let them brood on it for a few years, or search the right diorite rock from the five thousand scattered around the fortress.
- using more odd ingredients (ice swords with patterns of round squares on the hilt, sand cloaks adorned with the whisper of a cat, blood crowns menacing with spikes of sunshine, mugs made from rainbows..)
- musical pieces, plans of buildings, new weapon types could also become available through this mechanic.