Without a Trace was a Top 10 show back in its heyday 3rd and 4th seasons, but currently in its 7th season and now on Tuesday nights has slipped.
Says the network: "They no longer have the type of ratings that justify the massive overhead."
That being said, both Case and Trace have averaged over 10 million viewers an episode this season which isn't exactly a failure (at least in my mind).
Both shows are rumored to be looking at ways to cut costs.
So...would you be upset if these shows sailed off into the sunset? Without a Trace was one of the few procedurals that I've actually ever watched with any regularity, so for that one especially, I'd be a little bummed.