If the Russians have their way and the IIHF agrees you might get close to this. The MHL (Russian Junior league) is proposing a World Club championship that would run in August or early September that would feature the MHL winner, Memorial Cup winner, Swedish junior champion (J20-elit I think it's called), Finnish junior champion, a US representative (widely thought to be USHL champion), Czech junior champion and possibly Slovakia and Germany as well. Whether or not this will be a huge success (or an exciting tournament) remains to be seen.
I just hope that the allow the Memorial Cup champion to use their roster from the previous season. With the way some teams load up with 19 year olds to make a run at the Memorial Cup (see Calgary Hitmen from last year), they are left with little from that team. Thus, the Hitmen went from the WHL champions last year to the worst team in the WHL this year. It would make for an awful tournament if say the Saskatoon Blades win and they lose Brayden Schenn (among others) or if St. Mike's win and they lose Maxim Kitsyn etc. Plus the MHL has an age limit of 21, not 20 so the CHL teams are at a disadvantage possibly agewise already.
The biggest stumbling block would be the NHL parent clubs. Since Brayden Schenn in all likelihood not be in the CHL next year (and if he is I'd consider that a massive failure in his development), would the LA Kings allow him to play in a tournament with a team that he has no connection to for the upcoming season? I could see this turning into the World Basketball Championship, where the NBA clubs said their players could not go and play because their insurance didn't cover games not in a NBA uniform.