My big concern isn't Wilson at this point, but rather who will replace Harrison in the longer term. Wilson has the speed and covering instincts and showed himself to be an OK tackler earlier in his career. I'm worried about the future at SS, though. Like every other team, we need someone who can dominate physically and who can cover the TE or one of the backs. I'm not sure James Sanders is the answer, but then I haven't seen enough of him to judge (and I am certainly no expert).
I should also say that I am a Hobbs fan, as relevant as it is to this thread. I like his speed, his covering seems OK and I think he can really lay a hit on WRs.