There will be plenty of show, don't worry. You are greatly overestimating the consistency of these supposed 'top' teams. There might be favourites, but FPX/OG upsetting Heroic can very well happen, I mean they just replaced b0rup and niko. Or looking at group D. If EG/fnatic have a good run and Liquid underperform a bit, who knows what will happen.
What I am saying is we should wait and see for now, because things in cs almost never work out like you expect them to.