I think Zanetti is a bit overrated due to draft status. He certainly has pro potential but I don't see him as a NT material as of today. Not enough skill offensively while being not physical enough defensively for his size is just not a very alluring combination. Aebischer, Gross and Berni were miles better at the WJC at the same age and none of them is on the senior team right now. Sidler is hard to judge, he has more offense to his game than Zanetti and I like his compete level. But like you said he seemed really outmatched physically in this tournament already despite being on of the older players...I'd see Zanetti as potential NT-player sometime in the future. Sidler is probably too small, but yeah, Egli played a WC last spring.