@polydad I'd go simple and say food, air and water. Don't overlook the basis of everything, people culture and economics rely on it.
So food forests, ways to close the nutrient cycles (graywater plants, composting sites...), an ecosystem able to provide for, sustain and make that people happy.
Just my two cents, if you really are making a city and want some help with that side of the design ping me =)
@arteteco Yes I want to make a city and yes I'd like your help with it. Or we could make two, one where you are and one where I am. Or move up from there.
A city does need to take care of the needs of its citizens, my list of which is up to 18 so far.
It's after we've got that *done* that things start getting interesting...