A guy like Ekholm makes everybody better, it's a chain effect. Ekholm's presence eases the workload for Nurse and Ceci (that's two), Ekholm makes Bouchard better by being his safety net on that pairing (that's three), Ekholm makes Kulak better because he can focus on a softer minutes pure 3rd pairing role (that's four) and Ekholm makes Broberg better because he's a Swedish (Viking?) Mentor.
He's not Chris Pronger or anything like that but he was the best available option on the market for the Oilers from a needs standpoint and his wife loves the cold and snow, what more could you want.