If you look at the Nashville Predators history, they have had Kimmo Timonen, Shea Weber, Ryan Suter, Roman Josi, Ryan Ellis, Mattias Ekholm and Seth Jones. Most teams would kill for one or two of those guys.
For some reason, though, there has been a recent migration of defensive prospects from the Nashville Predators organization. By last count, they have lost four defensemen from the upper levels of their pipeline.
With the exception of possibly Taylor Aronson, they were still works in progress but the Preds had time and money invested one way or another.