I've been renting regularly at DTW for the past two months (here now actually)

and I must say I like the selection. While I must agree that parts of the Emerald / Executive Aisle appears to be in disarray sometimes I have only once seen the Aisle(s) to have a sparse selection. I have had:
- Chrysler 300C (w/Hemi)
- Chrysler Pacifica
- Chevy Tahoe
- Pontiac Grand Prix
- Cadillac - not sure which model
- Dodge Magnum
All but the Grand Prix came from the Exec Aisle. I took that because the Exec Aisle was pretty much empty at the time or had cars I had disliked.

The 300C was a nice surprise.

Didn't realize it was the Hemi until I started it up.
But there are always cars stacked up that you can't get to because they are too packed in.