You just sound like you want it because the last time there was single elim format EMEA won all of them.
That's not true, I've easily watched more NA than EMEA, I'm happy to root for any region. Also it makes no difference, EMEA teams aren't just magically better at single elim.
The reason why so many people hated single elim this year was because it was regionally, which I hate too, this year I'll forgive for having to work around an odd number of teams, but I'll sure as hell be complaining if we continued with it next year. The Playoffs format of the most important tournament of the year is the exact same as the format for the other 2 events, which makes only the number of teams the competitive difference, which is mitigated by a double elimination bracket anyway. Single Elim at Champs however would actually solve a lot of problems, too few games in the venue? fixed, Higher stakes for each game? yup. It'll make one off upsets way more exciting as a favourite knocked in to the lowers can't just reap the lower bracket, from an analytical viewpoint sure single elim is worse, but as a fan it's got so much more entertainment value, and at the end of the day viewership is what makes investors invest, not the number of armchair analysts who think they can be the next up and coming tier 1 coach.