Let me make this real easy for you.
LyRrAd is right. Stamkos and Turris will not be there. No chance.
Doughty is a toss up to make the Kings at this point. So he, likely, will also not be there.
The WJC is in NO way a marketing tool for the NHL. Canada is the only country in the world that really gives a flying rats ass about the WJC. The NHL needs no further marketing in Canada. Therefore, marketing opportunities are limited.