This is a continuation of comments started in the "air superiority" thread.
In addition to the connectivity issues of far-off colonies, it always bothered me that one of your colonies could be lost simply by having another civ's borders expand to include that tile, without any repurcussions, except that any defenders of that colony are now invaders.
Perhaps this might work. A colony can be founded by a worker in the usual way, but this colony is a 1-tile town (central tile only) at the start, with its sole citizen employed in the business of the colony - mining iron, trapping fur, etc. - in other words only the central tile gets worked so there is no extra food for population growth. The "business" of a coastal colony would be sea trade (i.e., a harbor), possibly combined with resource extraction if it were lucky enough to be a coastal ivory tile, for example. Borders of the town could be expanded by the usual method of building culture-producing improvements, but there wouldn't be any population growth unless more workers were sent there to join the colony. If workers join before the city-radius expands, the player gets to designate 1 tile in the 8 adjoining tiles to be worked. That could lead to a food surplus and population growth in the usual way.
In addition to the connectivity issues of far-off colonies, it always bothered me that one of your colonies could be lost simply by having another civ's borders expand to include that tile, without any repurcussions, except that any defenders of that colony are now invaders.
Perhaps this might work. A colony can be founded by a worker in the usual way, but this colony is a 1-tile town (central tile only) at the start, with its sole citizen employed in the business of the colony - mining iron, trapping fur, etc. - in other words only the central tile gets worked so there is no extra food for population growth. The "business" of a coastal colony would be sea trade (i.e., a harbor), possibly combined with resource extraction if it were lucky enough to be a coastal ivory tile, for example. Borders of the town could be expanded by the usual method of building culture-producing improvements, but there wouldn't be any population growth unless more workers were sent there to join the colony. If workers join before the city-radius expands, the player gets to designate 1 tile in the 8 adjoining tiles to be worked. That could lead to a food surplus and population growth in the usual way.
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