Sharks Poised for another Downer?

Sharks General Manager Doug Wilson has recently said that he is happy with Sharks roster even though he has done nothing to help it after another disappointing postseason exit. The Sharks have lost Vesa Toskala, Mark Bell, Scott Hannan and Bill Guerin since the season ended and have sat back and watched as big name players have moved around. They have locked up Thornton, Rivet, and Grier which have been good moves, but why are they not going after another experienced defenseman or forward? As a Sharks fan I'm not getting all that excited as the season nears. Any thoughts?