Gregory Shamus/Getty Images Hines Ward with Troy Polamalu on December 28, 2014. The Pittsburgh Steelers have done a lot of work in the wide receiver room over the last year. After trading away former 1,000-yard receiver George Pickens and trading for two-time Pro Bowl wide receiver  DK Metcalf , Pittsburgh made another trade this offseason to combat multiple free-agent losses. It was able to acquire two-time 1,000-yard pass-catcher  Michael Pittman Jr. However, the team may not be done adding