I'm too much of a reddit noob to create quote thingys, so you'll have to deal with my old school " "'s.
"1. Playing for others: who is preventing one from playing for other up front? You can just login and play for other and rank up other kids."
Just like any game, this is possible yes. What's your point? That people would play others all the way to Blizzcon? Why would they do that instead of playing themselves there? Or do you suspect Firebat qualifies himself and then 15 others to be sure to win it?
No evidence, and doesn't make sense why this would be a problem for the competitive scene.
"Screen sharing: Well now you are afraid that blizzard might track IP address of where your accounts are being played. This is 100% safe way to get help from other person. They can play for you using screen share because there is literally 0 mechanical skill involved in the game. I heard blizzard now implemented in game observation system : that’s a great improvement to help other people cheat! Thanks blizzard."
Same reply as 1. Also, that is a great improvement for everybody that has friends they do other things than win trade with. So yes, thanks Blizzard. It is great.
Since you already told us Blizzard has the match history (and we have proof they use it, since you got banned), we know simple win trading doesn't work. Then you're on some sort of illuminati setup were several people play long games and lose on purpose to one person who gets a lot of points. It's a lot of hassle to send 1 person to a tournament. For that person to have the slightest chance in said tournament, he/she needs to be on a certain level to be able to compete. And if he/she IS on that level, why not just try to qualify legit instead of going through a very complex and risky process?
And no, I'm not gonna assume that everyone win trades, like you do. I would believe you if you had any other evidence than "I'm a cheater, therefor everyone else is". You're only proving you're a cheater, which wasn't news to anyone.
I don't understand what you're trying to do here? You have no evidence, which leaves us no option but to only speculate about the subject. But you don't seem very interested in discussing the matter either, since you're just calling everyone that disagrees stupid or idiots, which you seem to have a habit of doing, judging by your history.
HOWEVER, displaying match history is a great idea. I think every Hearthstone Player from rank 25 to legend would love to have it.