I've been thinking about a combat visualiser for a few weeks now.
The scene I always think about is a dwarf and a goblin fighting, each with a weapon and shield.
The Dwarf hacks the Goblin in the right upper arm with her -bismuth bronze battle axe-, tearing the muscle through the copper mail shirt!
That sounds easy enough to make. A goblin model, a dwarf model, weapons and armor, a humanoid skeleton, some fancy procedural animations. Sounds doable. But then you get stuff like:
The Dwarf scratches the Giant in the upper front tooth from behind, and the severed part sails off in an arc!
and
The Dwarf bites the Goblin in the third toe, left foot, bruising the skin!
The Dwarf latches on firmly!
The Dwarf bites the Goblin in the lower body, bruising the pancreas!
The Dwarf latches on firmly!
The Dwarf bites the Goblin in the left eyelid, bruising it!
The Dwarf latches on firmly!
The Dwarf bites the Goblin in the right hand, bruising the muscle!
The Dwarf latches on firmly!
And let's not forget certain body parts that are added by mods...
You would have to be insane to try to make a combat visualiser for Dwarf Fortress. Not the "wow that guy's crazy" kind of insane, but the totally batfuck, "that guy who talks to his socks", star craving mad kind of insane.