In 2017, free safety and strong safety are becoming synonymous, especially in the way we play defense. Both safeties have to be able to cover. Gone are the days where you can afford to have a goose at strong safety to allow catches with the consolation prize of a nasty hit. "Enforcers" are liabilities, and arguably, they always were.
The fact of the matter, I think, is that the front office fell in love with Elam's college production and not his traits. Quality scouting is based on traits, not stats. Stats can be inflated by a system, by luck, or by playing inferior talent. In hindsight, Elam didn't really demonstrate any traits in college that indicated he'd be a quality cover safety. From what I remember, he was a roamer. Rarely was he a deep guy or in man coverage. He was just kind of a homing missile that followed the ball. Then he took bad angles and had poor tackling form, but boy oh boy he could destroy a guy.
I kinda see this approach in other picks. Kamalei Correa fits the bill, as does Terrence Cody. We've made a lot of picks where the player's stats had good results, but I don't know if the scouts took a hard enough look at the actual traits that caused the results. When I look at Correa, I see a guy that benefitted from a confusing defensive scheme and from being too fast for college tackles to handle. I don't see the traits that actually indicate a quality edge player.