It's weird I know but outside of specific areas I've always thought of Mega City 1 as a well made, clean city- future building materials and vast amounts of robot labour always suggested a somewhat sterile place (albeit one covered in neon lights advertising the lastest Otto Sump products.)
I've been reading the
Judge Dredd Complete Case Files recently and I noticed that in the early strips, MC-1 was generally depicted as a pretty nice place to live (aside from the horrendous unemployment and crime rates). IMO, it started to be depicted as a bit run down after the Judge Cal storyline, and it really started looking grotty after the Apocalypse War (appropriate, as half the city was nuked). Since then, there has been a succession of one city-wide disaster after another (Necropolis, Judgment Day, Inferno, Doomsday for Dredd/Mega-City 1, etc.), so the city has really never had a proper chance to recover from the Apocalypse War. Now, I don't know if this was intentional on the part of the writers and artists or just a coincidence, but to my mind, it provides a handy explanation for how the depiction of the city has evolved over the past 3 decades.
It might be worth considering that the Mega Cities are meant to be the last bastions of civilisation left on Earth and, when the strip started, they're relatively new constructions (Dredd himself is actually older than the city) and no matter how hight the unemployment rate, a city doesn't become s slum overnight, it's taken a few decades for the rot to really set in . . . and yes, the repeated and widespread devastation certainly helped!
As it stands now, my perception of the Meg is that it's pretty much like any major city (albeit on a scale larger by several orders of magnitude), you have your "nice and clean" areas where the rich folk live (mostly in the upper levels of certain larger blocs), you have your low rent - but still liveable zones (the high density accommodation equivalent to suburbs) and then you have your utter cesspools and near war zones that are like Liverpool on a good day.
Getting back to Blade Runner for a second, even there you had this divide asthere's a clear and stark contrast between the depopulated, decaying hotels, crowded streets with chaotic bazaars and the austere sterile environment that was the Tyrell buildings or even the slightly run down, but hardly impoverished apartment building where Deckard lived.
Funny when I was reading the script I was imagining Mega City One in day light and kind of a bright dystopian megatropolis. That concept design is a night time shot...I guess we'll see.
That's actually not far off. As I said above, it's like any city just exaggerated to the nth degree and anyone who thinks that civil unrest, high crime, poverty and social disorder can't possibly exist in the same place as wealth, privilege, good schools and nice clean parks probably hasn't spent much time in an actual city. Or if they have, probably didn't stray too far. I remember driving through central London once a few years back and (being a country bumpkin) was shocked when after driving down what was clearly a wealthy, clean and well tended to Notting Hill type area that turning a single corner lead me to a street with boarded up houses, burnt out cars (plural), overgrown gardens and police riot vans on every corner.
In the case of the
Dredd film, it mostly takes place in a single bloc that while not totally squalid is pretty much an overcrowded slum where the gangs are really running the show. In the comics there's plenty of blocs just like it and a lot of them get away with it simply because, as in real life there's only so many Judges in the city and they can only respond to a certain number of reports, even serious crimes often go un-investigated. Also it's not just a "big" city, it's a Mega City. The place is huge and covers a whole swath of the North American east coast. Just one of the larger blocs can hold a population greater than modern day NYC and there's hundreds of them.