The outer edges of Bellisseria's themed continents are not just home to Linden Homes regions—they also serve as important coastal and aeronautical navigation routes in Second Life.
When these outer edges are "missing" or left "unfinished", they hinder the flow of coastal and aerial traffic around large areas of the grid, which can be both inconvenient and frustrating for users.
A fully developed coastline not only enhances navigation and accessibility but also makes the area more visually appealing and attractive to potential future Linden Homes residents.
For these reasons, I strongly recommend a new policy; that all future Linden Homes themes be developed with their outer coastal perimeter edges completed first. Once the full extent of a coastline is in place, the interior regions can then be filled in as needed, based on demand, thus not restricting navigation routes in Second Life.