Gameplay > Graphics
Toady is hopefully well on his way to reminding the game developing community of this lost fact. DF is an amazingly deep game experience. Best game I've played since the likes of original Civilization and Populous. Easily in my top ten of all-time games. However ...
I'd seriously like some major optimization of the program; it slows down something fierce once you start stacking dwarves up. I honestly get a little sad looking at the dev log and seeing new features being emplaced; more processing cycles flowing away, slower and slower running.
Flows are right out on my machine; they take WAY too many cycles to figure out.
It'd also be nice if job selection would stay confined to an area as well; engravers and miners should finish out a room before moving on, or at least give preference to work tiles NEXT to them vs scampering way across the map to work there, then running back, then running back, then ... I don't always want, or have time to, watch them constantly, painting a few tiles at a time for them to work on, to ensure they get done sometime this season.
I'd also very much like the option to set rock jobs by type of rock (you can for metal, why not for masons and mechanics and crafters?), so I can stop having to forbid large areas, clear out Z-levels above and below and so forth. There are all these hoops I have to jump through just to get *most* of my rock jobs done with the rock I want, it's a bit annoying sometimes. And for decorations/encrusting, again it'd be nice if you could tell it what to encrust (i.e., encrust only certain materials and/or quality levels). It's a pain to have to set up a special stockpile/workshop complex in an isolated corner of the map just to be reasonably sure the jewelers and crafters are going to decorate the expensive gold and platinum furniture vs the slate shite!
Nobles demanding things that don't exist, can't exist, on your map; very very annoying. So far, not naming any justice officers lets the 'justice' not happen; otherwise it's pretty damned annoying to have carefully trained up dwarves slain for no good reason. Killing over a lack of a window! Extreme. I hope leaving the Capt'n o't Guard slot blank feature never gets fixed! Nobles should only demand things that are possible; one demand category for possibles, another demand category for things that are possible via importation, perhaps.
Artifacts are kinda in the same category; I turn them off because it's random, and seems mostly to lead to dead/insane (same difference) dwarves. Though both nobles and artifacts have led me to a habit of always requesting certain builder block metals (tin, nickel, etc...) and types of food (turtles and lobsters for shells) just to have those things on hand.
Why can't you request glass items from the caravan? Or did I miss it? Hell, just plain old sand bags. Let me fill in a price, I'll pay thousands of times the going rate for sand on some maps, just so I can get the duchess to SHUT UP about the window she wants.