I agree with this, corals have almost no usage. A few suggestions: Corals are self sustaining sources of food, similar to the fieldsCorals spawn farmers/breeders instead of sheep, the more farmers you have the faster food production you have.In the first stages you have a limitation on how many farmers you can have on one coral (at first for example 5, like the fields). Every phase you have a new upgrade that increases the size of the coral allowing more farmers to be garrisoned (therefore they can farm more sheep).Various upgrades allow the food production to increase (better tools, better farmers etc)This way corals are more of a late game strategy which, if you fully upgrade and if you have a coral fully garrisoned, it should provide as much food as the typical 8-9 field set up does. However because of the expensive upgrades and farmers, this would not be a good early game strategy. the benefit is that it takes up less of your max population, the catch is that it is expensive to max it out. This would make the corals much more useful, and they would be much less of a nuisance to use. Extra point: An interesting upgrade would be that instead of breeding sheep you breed cattle which increases food production by X% and armour upgrades cost Y% less food/metal(?) (leather). This would only be available in the 3rd phase to maybe some civs, mainly middle eastern ones such as Ptolmies, Persians and maybe Mauryans?