Where does Detroit rank?

[Gistok]

The Archbishop of Detroit isn't a Cardinal, and we probably won't see one again. Maida was the last one.

Just another example of this region becoming less important, less relevant to the rest of society.

Ummm.... you do realize that Detroit is the only city in the USA with 2 Cardinal Emeritus? Edmund Cardinal Szoka and Adam Cardinal Maida...
current Archbishop Allen Vergeron will likely get his cardinal hat eventually... so I think you're over pessimistic about Detroit losing its' Cardinal status. At 1.4+ million members in the Archdiocese, it's the 6th largest Archdiocese in the country [[Brooklyn is only a Diocese)... Detroit gained its' Cardinal status in 1937... and the Archdiocese is not just based on the city's population... but the 7 county catholic population.

http://www.catholic-hierarchy.org/country/scus1.html

So I wouldn't worry about Detroit losing its' Cardinal status to such places as Indianapolis, Columbus, Austin, Phoenix, San Diego or San Jose...

And currently neither Los Angeles nor Philadelphia have an Archbishop who is a Cardinal. These things take time....