Do want. The silliness of some combinations is fun, but it would be nice to have them be more relevant.
ART_EXPORT, depicting the top export that your fort is known for.
ART_CRIME, because nothing immortalizes an unjust properly executed beating like putting it in bronze on a hatch cover. Dwarven artists are not without a sense of social commentary.
ART_DEITY, possibly the deity that is most worshiped by your population. People have been asking for religion to have more involvement, and while this would be pretty cosmetic...I haven't seen any references to the gods of the crafters in their work. I'm still new but I've seen at least 50 artifacts with images on them by now. I know it's more intended to record the history of the Fortress...but half the time the images are about figures in history I have no clue about, or are so vague (The image depicts a group of dwarves. A dwarf stands in the middle. He is surrounded by dwarves) they might as well be replaced by gods.
ART_DEAD_RELATIVES. Grieving mothers, and all that.
ART_BATTLES The game could track what year/season the most dwarves and hostiles died, generate a name, then spit that out with the date and the casualty counts. I usually make notes when I want to remember how things went down...so I'd actually read these artifacts to remember what happened. (As opposed to just for laughs.)