With an eye to your defense, I'm noticing that you have no doors between your main area and the cage traps. If you have a hidden siege attack, the cage traps would catch up to four of them, but the rest would be free to savage your dwarves and you'd have no way to seal them off.
Also, the ramps next to your bridge lead into your fort instead of out. If you pull the bridge out from under an enemy and they fall in, they can immediately get up next to the closed bridge. A building destroyer could then attack the doors diagonally as well as the bridge. Ideally, there should be nowhere for an invader to stand on your side of the moat.
Otherwise, I've only got nitpicks. You've got ore in your masons' stone stockpile. That doesn't need to be there. There's a lever in an office; it should really be in the statue room so that there's always an idle dwarf nearby to pull it. The refuse heap is outside your defences; you are likely to lose a dwarf that way and you'll be completely cut off from it during sieges. Build a wall around an empty plot of land and connect it via tunnel to your fort to avoid that. I'm guessing there's a good spot directly above the dining room or farm.
On the plus side, things are reasonably compact, organized, and defensible. The dwarves have everything they need, even a gym!