I'm about to go out of country so I won't be around much for the next two weeks but I'll try to post more about what I'm thinking on the slower nights.

I'm thinking primarily more street level type to keep the supers from becoming too distant from the populace and too protected from repercussions.  I'm a big believer in villains you can empathize with and shades of grey.  Makes it much more impactful when a bad character or a generally good character really crosses a line.

I'm thinking one of the main cities will be something wherein the streets are favelas and the wealthy live literally on the same blocks just in high rises far above them.  Strata based on wealth.  Some will be off by in protected hills and all that but some are just right there as in parts of Brazil.