It's also worth noting that districts useful, just not when heavily partisan. For example, if you have a city that is 51+% white, and all your council elections are at large, it is entirely possible for white voters, as a bloc, to just overrule the other 49% all the time.
This is less probable with districts because in general races are not well-mixed in American cities in terms of spatial distribution.
This is less probable with districts because in general races are not well-mixed in American cities in terms of spatial distribution.