I honestly don't think they're going to bring in another goalie. I personally would trade Skinner for Gibson at 50% (Skinner makes 2.6 and Gibson would be 3.2, so not a huge difference). But I don't think a goalie is in the cards by TDL day.
I get it. But I think Gibson is on a whole different talent level than Skinner. Frankly, I think a healthy Gibson on his game his still a top-10 goaltender. That's just me. But I would also note that Skinner is a sub 900 goalie on one of the best defensive teams in the league. And Gibson is on maybe the worst defensive teams in the last decade. That matters.
Anyways, if Gibson ever gets traded, and he blows the doors of his next team, remember me as one of the guys who said, "I told you so."