Maquiladora, sure it's possible. I've made more before in large regions. Basically, I could just zone up everything and not worry about demand ever dropping off for anything but the most wealthy residents, which I didn't care for any way. Check out my income/expense and funds graphs - no unnatural jumps. 
Jonny,
. I figured the region could use a poor 'hood, because you guys have waaay too many rich folks.
With the poor folks from Fairview providing vital services that educated people would rather not do, you can fit more of them in. 
Lemmy,
. Sorry... I had hoped I wouldn't mess up the edges for anyone. 
Ludd,
. I'm evil, yes, though I can't claim full credit for this, as I wasn't aware elevation had any effect on the spread of pollution.
Now all this dirt in the air suddenly makes sense.

Jonny,



Lemmy,


Ludd,



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