2nd round picks:
2011 Clendening and Saad
2010 Rensfeldt, Holl, Simpson, and Johns
2009 Pirri
2008 None
2007 Sweatt and Aliu
2006 Makarov and Danis-Pepin
2005 Blunden and Brophey
As of now, really only Saad has had an NHL career as a second round pick by the Hawks. That's one out of thirteen, or a poor 7.7%, not counting the too-early-to-tell 2012 and 2013 drafts. if you add Pirri, then it goes to 15.4%. A crapshoot at best.
Absolutely agree. At the minimum he's a potentially very attractive trade chip. For the Hawks, perhaps he would have developed into that elusive point producing power forward, or third line center.