From EUO Manual
In no particular order ...
- Don't put braziers on blocking tiles such as walls.
- Don't get too busy with the floor tile colourings. Everyone goes haywire with technicoloured chunder floortiles, and it looks like vomit.
- Avoid having caves that don't link anywhere.
- Don't place pseudo items: eg tokens, orbs, training, spawner, treasure etc.
- You don't need to use hooks anymore. All items should be auto-flagged as furniture, except for switches and fountains.