something like this may i exist but i have some suggestion
when you defeat a rival city you can pillage it.
you get
1 a % of the stored food and a % of the food that is going to be produced at that turn for the city to the capital . some promotion will increase the %
2 some % as slaves. promotion will increase it a bit
3 % money based on the production of the city
4 % sciense based of the science on the city
5 some % production
then the city is leaved nearly destroyed to the one it belonged it
when you defeat a rival city you can pillage it.
you get
1 a % of the stored food and a % of the food that is going to be produced at that turn for the city to the capital . some promotion will increase the %
2 some % as slaves. promotion will increase it a bit
3 % money based on the production of the city
4 % sciense based of the science on the city
5 some % production
then the city is leaved nearly destroyed to the one it belonged it