Woah! Bjergsen was an absolute monster in his first season in the LCS! Don't hold CW being 0-9 when he got to play for them against him - I believe their record afterward was top 3-4 worthy, and that was with TheTess and NeeGodBro on the team. Remember his Zed and Syndra hero carries?
Dexter, Amazing and Krepo are all strong LCS players in NA (remember that dexter was at last year's worlds, and Amazing is one of two EU players in this year's Quarter-Finals, Krepo is one of the best western supports around - I'd take him over Nyph any day). I think we'll continue to see one or two great players poached from EU teams, particularly if they can't get into Fnatic and Alliance. With the cross-region rule changes coming in next year, Western EU players are arguably more attractive than ever since they largely speak English and can fit into American culture easily (would you be at all surprised if someone signed fredy, say?). Eastern EU teams tend to run into language difficulties when looking to replace players - has happened to MYM, Gambit, and might happen to Roccat at some point. I suppose it's possible another Gambit comes along, but I'm not holding my breath.
Fnatic and Alliance will remain strong though. Could definitely see them pulling far away from Copenhagen Wolves, Millenium (a team with no coach...) and the like and making a good go of keeping up with the rest of the world. History has shown that it's very tough to improve as fast as equals practicing in more competitive regions while you're dominant in your own, though, and I wonder how Fnatic will recover if Peke, sOAZ, Cyanide or Rekkles ever leave though - they've been together so long I imagine transition would be tough.
My view might make more sense if I say that I have really high expectations of NA - I think NA will be close to Korea this time next year. NA has came a massive distance in one year and shows no signs of stopping.
I don't know enough about China to predict at all what will happen there, only that the competitive depth there is insane, but they're elite teams always seem to have key flaws that stop them succeeding internationally.