I think it's clear we have roster deficiencies--deficiencies that are Sullivan- and Michalek-shaped. We lost a decent (not great) top-6 winger and didn't replace. We also lost a decent (not great) top-4 d-man and didn't replace him. Sutter is clearly a downgrade from Staal, but I don't really count that as a deficiency, since flubs last night aside, Sutter seems like a perfectly serviceable 3rd line center. So far, I'd say the Asham for Glass exchange is about a wash. Glass is definitely a better skater, but doesn't seem to have a shot like Asham's.
After Parise and/or Suter didn't work out, I think the plan was to see if any of the internal candidates could fill the holes. As of now, the internal candidates haven't been up to it. I don't think the Pens need to add players of that caliber, but another solid 2nd/3rd line winger and another solid 4/5 d-man would make me feel a lot better about the team. That said, I don't know that the addition of a couple good players would really help if guys keep turning the puck over like they did last night.