Grave:- On the "insane health" that someone mentioned, I know what he means....
Its Mylon's mod, its not working as you intended, couple of screenshots to illustrate problems....
First hmmm minorish but still....
Gandhi's guys have mined this hill 3tiles out of Delhi, even though it isn't being used by any city (and can't be used by Delhi for millenia upon millenia and even then only if it becomes Legendary.) The ai obviously thinks thats within its city limits. In fact that can and will cause large problems, if the ai is improving "pointless" tiles. It
may eventually fall within another city's radius (normal 2 tile fat cross), but that would just be a happy accident.
The second. is that the game is counting all the tiles within 3 of a city as "within that cities limits"...look at Ulundi's health count from forests +10

!
This again will be unbalancing, as a few well placed forests can serve several cities at once, and falsely boost health in each city...
EDIT: From a cursory exam of the files, I don't understand why the program seems to think that ALL cities have a "3 tile fat cross" for health and maybe other purposes as soon as the city is built. I checked a few other cities in my game example and this was the case...
In fact, for Ulundi in the screenshot to have +10

from forests, it would have to have 20 forests even within a 3 tile radius. It doesn't, so something isn't right at all....
EDIT 2: From a quick look at Mylon's original mod, it may be counting tiles 4 from a city center for health and probably other purposes, this would account for the 20 forests...
EDIT (The Last): You may wish to see this comment
http://forums.civfanatics.com/showpost.php?p=6451846&postcount=22