I doubt the residents of "West Newark" would appreciate the name, but the name isn't that important. I considered calling it "Orange", but that would be pretty audacious considering that the current Orange is absorbed into Newark.
Which clearly calls for New Orange!
What would be the point of even keeping counties around with municipalities that large and "orderly"? Now that's going to be savings... Then you could limit this structure to only the megalopolitan parts of New Jersey and have the far northwest and far southeast retain the current structure (perhaps eliminating some of the very pointless municipalities). Of course, a "city" as large and diverse as that Jersey City would probably be well served by having at least some sort of community councils within it... though they wouldn't need to have any independent budgetary powers but just be given some play money per year from the city.