I am pretty sure that this map would show up as a space on a guild city sector more than just a dot. I think this map could be incorporated into the terrain of a sector and then you have the entrance right there. In guild city we have buildings showing up and this map is several hundred feet across so its a good splat on a map. I'll sort out the scaling and provide a template and you or I or someone else could map and keep the existing bits in place.

Your map doesnt have a scale yet but thats a hand card on the rail track. So that makes the rails about 2'6" wide or about 50cm. So its pretty much fixed for the scale. Its just a matter or getting it placed into a sector at that correct scale.