Hi, first of all I apologize for any grammar or spelling errors, I am not a native English speaker.
I would gladly appreciate some balance changes, and I agree with WindHunter, those changes should be discuss by the community.
Top player have the widest point of view on the game's mechanics, and probably the biggest knowledge of the game as a whole, they are indeed better suited for balancing.
But I think we should not forget that not every player is as skilled as a top player and such, some card might only be overpowered when they are used in a very skillful way, and this aspect must not be overlooked when doing balance changes.
As a first step, we should focus on buffing the obviously weak cards, those card that aren't played at all, by anyone. And i think asking to see players deck is a good way to outline which cards need some buff, let's progress slowly and don't rush on nerfing what's op right now, it would have too big of an impact on the game.