Planeshift has a problem, namely the compass, or to be more accurate, the cardinal directions.
Since we inhabit a spherical world we are used to using the cardinal directions we know from our childhood, North, South, East and West. However Planeshift is not spherical, and our use of Earth based directions have many major problems in our Cylindrical world.
Mostly it's a question of names, and settings. Since the world of Planeshift is cylindrical in nature, north and south lose their meaning as directions, instead i'd like to propose the adoption of more useful names, such as sunward, wallward, clockwise and anticlockwise ( or perhaps widdershins ), much the same as the conventions used in Discworld, which work in their special circular setting.
At the moment we still use the familiar north south naming system, which works only because of the restricted nature of the world we have at present, however as the world enlarges and grows, the convention of referring to the Bronze Doors as 'northward' will have to change.
In the world of yliakum the inhabitants would soon have to abandon the earth based systems they were used to, instead they would develop a naming system that described directions based on the world they found themselves in thus sunward, which would be the direction one would walk in order to go from the wall to the edge of the level, from any point in the circle this would be a consistent direction similarly the converse could be known as wallward, which would be away from the sun, toward the wall. Equally clockwise would be to walk around the level in a right hand direction, anti-clockwise, or widdershins a left hand one. Logically to give directions a combination of sunward and clockwise might be used in order to describe the location of a particular place, for instance, the bronze doors might be described as 'following the road wallward', and north gate becomes the wall gate, the south gate the sun gate, etc.
I'm not saying that these names would be the ones that would be used, more discussing the eventual adoption of some system of naming of directions in a more IC manner than the OOC manner we use at present, obviously the details will need some fine tuning, and there will always be problems with navigation in a world that has no real analogue in our own experience I'm really just trying to call attention to an issue that may confront us some time in the future as the world changes around us.