I think the window, like always is closing as we speak. If Gillis was counting on moving Luongo for a repair kit type return, he may have erred. It may well emerge that he is being patient and will gain a stunning overpayment, but this seems like wishful thinking right now.
If Gillis is able to get a young center (Getzlaf, lol!) for Luongo, or even Luongo and Edler, the franchise is in good shape and may contend this season.
If Gillis cannot get a useful return he can keep the group together and try to carry a full roster into the playoffs. If he does this, I think he is overvaluing the current forward corps. The start of the season is pretty tough for Vancouver. They see Anahiem twice in the first four games. Game six is against the Kings. The team's compete level should be known by then, or game eight against Chicago. If they aren't playing well, Gillis is in a panic situation and this will impact the market. He must act, now, or be forced into uncomfortable positioning this summer after a bad season. Imagine the market value of Canuck goalies if the team cannot recover from a poor start and finish out of the playoffs! The window can be declared closed for certain, at that point.