Ability to expand a town 1 side at a time.
Allow people to select one side of their town to be expanded. In a lot of cases a full expansion would be a total waste because its too close to another towns borders, or on the edge of the world. Or you want it to connect to another one of your towns and you accidentally space it too far apart so there is a gap between them.
Town expansion options.
Sides
North
East
south
west
Corners ( can't be expanded unless they connect 2 sides )
North East
South east
South West
North west
Full Expansion.
Fully expands or Completes All remaining unexpanded sides if able.
All sides must be expanded before any side can be expanded beyond 1.
Costs would have to be adjusted depending on the size and side/corner
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Anonymous commented
Alternatively, it could just be that if your town can't expand in a certain direction (edge of map/next to another town), the cost would be reduced accordingly. -Meep