I'd like to suggest an ui change.
I'd like to see, at once, what will be the net effect of growing in the city.
Right now, I can see that my cities have 6 happiness sources (I have to sum them up) and because there are only 5 people in the city, total happiness is 5.
Then, I can see that the effect of growing will add 1 illiteracy and remove 1 distress, and total unhappiness is 5, exactly the same as the city size.
So, all these things taken into account, I can say that growing is going to increase net happiness.
What I'd like to see is the tooltip giving me the direct effect on net happiness. Will it increase, decrease or remain the same upon growth? I actually don't really care if I'm gaining poverty or losing distress, I want the net simple value to help me make a faster decision.