Here we go:

1. Somerset- an obvious choice. They simply have stores that you can't find anywhere else in the area. A luxury mall with high margins should keep it around for a long time.
2. Great Lakes Crossing- for reasons similar to Somerset, except the luxury aspect is lessened in favor of outlet mall pricing. But unlike most dying outlet malls off backwater freeway exits, this one is actually thriving. Where else can you find a mall with an aquarium?
3. Partridge Creek- it's outdoors and unique, and this will draw people here for a while. It's a generally good place to walk around, and has a great selection of stores to go along with it.
4. Twelve Oaks- despite Sears closing, Twelve Oaks is still a really strong mall. The Apple Store certainly helps, and it sees strong foot traffic more through its "hall stores" than its anchors.
5. Southland- as malls around the country have been on decline, Southland has gotten a second wind from a new owner. Cinemark boosts foot traffic and there are now restaurants on the periphery, in addition to an H&M. Downriver teens flood the halls of Southland on weekends, since there is NOTHING ELSE TO DO.
6. Briarwood- sure, Sears has departed, but it has just about everywhere else. Otherwise Briarwood is a decent mall, and the Von Maur makes it stand apart from others.
7. Macomb- this mall has done a good job of converting departed anchors into speciality stores like At Home and Dick's. They've also updated the exterior to make it seem less like a hulking monstrosity from the 1970s into more of a modern strip mall. But there really isn't anything that sets this mall apart from generic shopping centers; you go to Dick's because that's where it is, not because it's in the mall.
8. Oakland- spends its entire life living in the shadow of Somerset, but hey, at least it has a Penney's. There isn't much to set it apart from other malls, however. It's stable and should be able to hang on for a while.
9. Fairlane- The death of Fairlane has been greatly exaggerated. There is still a lot of foot traffic in the mall and the Ford Town Center Offices are a unique aspect. Macy's and Penney's might not hang on here forever through, and it could go south real fast. An indicator of the pulse of the mall will be if the Sears space gets remodeled or subdivided into new stores.
10. Westland- The last mall in Metro Detroit with a Sears come spring. And boy, this Sears is spotless, probably because nobody shops here. Macy's departing really hurt the mall, but the Kohl's here is huge and will keep it alive for a long time. The corridors are mostly occupied with forgettable stores.
11. Lakeside- Probably more alive than Fairlane, but the city is actually talking about tearing down the mall, so its days may be numbered. One of the four Taubman "super regional" malls in Metro Detroit.
12. Laurel Park- Aside from a Von Maur, there's nothing else of interest here. Carson's has departed, and the food court is basically empty. This mall will need a new anchor to survive, otherwise it will die fast or slowly like...
13. Eastland- what the hell is keeping the lights on? Finish Line? Just die already! You could fit just about every store that's left here into a few strip malls along Vernier. Every anchor of note is just sitting there, empty, and what the hell is a Shopper's World?