I saw what appeared to be a BLS last friday. I really can't tell because I was driving myself and didn't have the time to read the badge.
The BLS is probably the biggest failure Cadillac has had in
I think it was the style, a diminished version of the CTS, that really plagued the car. It never had personality of its own, and frankly, the CTS might be many things, but not beautiful. GM tried to improve sales by offering a station wagon derivative, but that was a bigger failure. The BSL saloon wasn't beautiful, but the BLS station wagon was dead ugly. No sense of proportions, no verve, no passion. Just boxy, as all Cadillacs these days.
GM dropped the small caddy a few years ago, when they got rid of Saab. Surprisingly, Saab seems to be fine these days, and GM hasn't given any good news for the last two years.