POLL: What was Lions' most important offseason acquisition?

The Detroit Lions' offseason has been pretty eventful from a transactions standpoint. I suppose that's what happens after you go 4-12, but in any case, the Lions have made a lot of notable moves this offseason. They made a splash in free agency by bringing in running back Reggie Bush and safety Glover Quin, among others. And they had a pretty splash-worthy draft by selecting guys like defensive end Ziggy Ansah, cornerback Darius Slay and offensive guard Larry Warford.

As we start to look ahead to the 2013 season, what one offseason acquisition stands out as being the most important? In other words, when the 2013 season comes to a close, what one move will turn out to be the most vital to the Lions' overall success?

On offense, the easy answer is Bush considering how much the Lions missed Jahvid Best last season. Bush should give the Lions a threat coming out of the backfield, which in turn could help open up more room for Calvin Johnson and others on offense.

Defensively, there are a couple solid choices, but the Quin signing stands out the most to me. Given the injury concerns with Louis Delmas, signing a dependable, talented safety like Quin was a necessary move for the Lions. Quin will bring a lot to the defense, and he should greatly improve the secondary.

Overall, I personally think signing Quin was the Lions' most important acquisition this offseason. I certainly think adding Bush to the offense was big, but I think Quin will help transform the secondary into a unit that is no longer viewed as the weak spot in the defense.

What do you think?