I don't think Van Ryn is quite ready yet. Personally I'd rather have Berube, at least as a short term thing.
The list of available coaches is insanely slim though. You've got AV and Q who are basically too expensive to hire because they need dollars similar to their old contacts. Tipp is committed to Seattle. You're not picking off an AHL guy or a rival assistant coach midseason. So who's left?
Ron Wilson - retired?/health issue
Michel Therrien - ehhh. Also may be happy just scouting.
Daryl Sutter - retired??
Bob Hartley - I think he's in KHL
Mike Yeo - but why?
John Stevens - ehh he's decent
Patrick Roy - but does he also want to be GM?
Paul MacLean - maybe the best of the bunch here
Doug Weight - I hope you have a goalie
Jim Playfair - hey, Friedman mentioned him for Seattle...
????
If you can possibly pick off a junior coach mid year, then absolutely call up Tim Hunter (top of my list when we hired Tocchet). I don't think he's willing, but another good choice is Dale Hunter.