It has many issues, but the modern tall buildings in Mumbai are amazing and are the solution to many of their issues.
If the US would start to build new buildings like Mumbai or Singapore more Americans would realize just what luxury and space a condo could have!
Mumbai needs more walkability (through super blocks and such), better trash etiquette (more trash cans - especially for the middle classes new fascination with dogs), and it needs 1000x more livable square feet.