I'm not convinced that anyone available right now would be an improvement. Hill or Brossoit could be available once the latter is healthy. Davidson could want to ship a goalie like Stalock out of Chicago since they're playing too well to tank (Soderblom is interesting, but I wouldn't trade him if I were them). As for teams that are already out of it, Reimer is always mentioned in San Jose.
I think Comrie and Anderson as a platoon are just as good as any of them, and any adds would be betting on potential fit. I think Gibson is past his best years personally, but he's always the name you hear. I think Buffalo would be better playing the year out and waiting to see what UPL, Levi, or Portillo can do. They're stacked in the pipeline.