A few cases where game data could be improved:
- Poorly written vanilla quests
Many of the quests from the original game were poorly written but ran well enough that they were never rewritten
- Items in dungeons not correctly connected to dungeon geometry
One item that springs to mind is the treasure pile on the moving bridge. When the bridge is triggered to slide, the treasure just hangs in the air.
- Broken dungeons
I have run into at least one dungeon where it was impossible to reach a quest goal because the dungeon lacked the connector to the level
- Inescapable dungeon areas
This is a tricky one as I don't really know what the best fix is. There is at least one quest that teleports you into a dungeon where you must escape. The problem is on one occasion I was teleported to the area of a dungeon closed off with a trap door. Trap doors don't open from the underside. Does the teleportation use a series on dungeon locations? Is it random? Is the best solution to prevent the PC from being teleported to one of these locations or to fix the trap doors so they open from the underside?
- Geometry not fully connected
This is another one where I'm not sure what the best solution for the problem is. In DFU it's very obvious when walls do not connect to ceilings and buildings are floating an inch off the ground. DFU lighting seeps through these cracks and makes them very noticable. The same is true for lamp chains poking through the ceiling etc.