I decided to get a little bit of empirical data about the numbers that are being thrown around. One interesting thing from running this a few times is that the human player seems to be hit worse. I do not know why, but that is what my number indicate.
Setup: I started a dual map with three players and cleared it out. All players were non-expansive. I setup the map so that each player had the exact same setup with four cities and enough food for all of them. Other settings: Last days, epic game speed.
Trigger: Three Hyborems in world builder...
Cities (All

and

is AFTER population in what is listed in the overview tab, F1):
Code:
City 1: 5 population, 13 :health:, 17 :food:
City 2: 10 population, 8 :health:, 12 :food:
City 3: 15 population, 3 :health:, 4 :food:
City 4: 20 population, -2 :health:, -10 :food:
Each of these are for successive runs (reloading the game) for what is given for "blight" in city view:
Code:
City Size | 5 | 10 | 15 | 20
----------+-----+------+------+------
Human | 26 | 34 | 55 | 64
Human | 17 | 31 | 43 | 40
Human | 25 | 26 | 52 | 44
Human | 18 | 29 | 46 | 50
----------+-----+------+------+------
AI1 | 10 | 17 | 20 | 29
AI1 | 11 | 24 | 25 | 27
AI1 | 14 | 22 | 15 | 25
AI1 | 5 | 22 | 26 | 18
----------+-----+------+------+------
AI2 | 15 | 23 | 20 | 29
AI2 | 18 | 15 | 25 | 22
AI2 | 5 | 15 | 24 | 27
AI2 | 8 | 13 | 16 | 32
As I said before I have no idea why the human gets hit so much harder but it really seem to always be that way in my games and I do not think that I am just remember the negative moments here.
If you consider the size 15 city:
4 * (overflow

) + (15 population)*2*

= 34
In each of the runs it would have ended up with at a minimum of -43

hit. Running the numbers in my head it will be around 15 or so turns before the city could possibly break even at which point it would be around 5 population. I would not consider that such an issue if it looked like the other players were being hit anywhere near as much, as everyone would just be screwed for a little while.
Also consider for a size 20 city and a 60

penalty it would require 100

or 5

per citizen. With plains/farms/sanitation/agrarianism and only 20 plots in the city radius to work that is just equal. If one considers that it is common to get cities into the 30s it becomes a little silly.
On a more sinister note, if a city has negative

with 1 citizen should it auto-raze?
