The OGF World is full of wonderful features such as this, this and these as well.
All of these have been accomplished using determination and effort, and have a really effective turnout.
@EMKLI mentioned this idea before!
However, it would be nice if we could take more inspiration from the real world. A good example of this would be the island stretching from Norðurland to ER137/138/139. They could stretch more, in fact why not have some sort of "Aleutian Islands" in that area. This would create a "Hesperic Ring of Fire".
Or for example the South. Why not have a sort of Antarctica like land mass, that could be a collaborative territory, but basically that would make it divided by the different users' countries.
Comment for more ideas!
(@eklas i am currently on a 'virtual holiday' in Letěnín😀)