Your sarcasm is bait. I'll take it. First of all, it's All Stars. Why get so serious about it? Second, you also completely left out LMS in the process. Perhaps fit that into why the regions are allocated the way they were if it matters that much. And third while you're at it, take the outcome of all the teams that represented their region for Worlds collectively and determine their placement. As for why not EU and NA on the same side, same point could be addressed with KR and CN. It's only the second year of this Fire/Ice system as well. Just for the fun of it, I just did a random team generator. It came up as NA/EU/IWC on Fire and KR/CN/TW on Ice. How "fair" does that sound to you?
I could complain on and on about how one sided IWC All Stars was for the 3 days up to playoffs but what's the point in that (in case you don't know, it was 14-2 for Team Fire). I for one am hyped for the All Star Event. And it's not because of the region designation for the event more than it is just an event to enjoy regardless. I'm still getting a Team Ice Icon because I like chill and cold.