I'm a well read grad student who's bluntly honest about all things, although I try to be most honest about myself.
Wong has been taken by Mr. Misery, and Doctor Strange goes on a desperate search for his closest friend. Because as much as it would seem that Wong is a servant, the truth is that he knows all the secrets of The Sanctum Santorum, he would do anything for Strange - and it isn't a one-sided relationship. Not completely. As much as Wong is a servant, he has also evolved into a confidante, and a dear, dear friend.
Strange is lost without Wong - and it's not that he can't get his shit together. Oh, no, he can function fine without Wong. He's still lost. He has a protege of sorts in Zelma, although at this point, she's a new Wong if anything. (Actually, I'm worried for Wong now that I've thought of it that way!) But the history, the many times Strange and Wong have put their lives on the line for each other? That can't be replaced so quickly.
I hope Wong's okay, for his sake, and for Strange's sake. I've come to enjoy Wong in this title quite a bit, so I hope he makes it through this storyline!