Create Game Mode Where Players Can Mutually Ban Card(s) Prior To Matching
A feature I long for is the ability to go into a match and where me and another player have decks mutually agreed upon where "card X is not played".
Similar to league of legends, how prior to picking champions there is a player initiated ban phase - I would really like to play in a game mode where I personally get to pick a card or two I don't want to play against. There are just some decks which are not fun to play against (ahem extra turn), and while Wizards might have a reason not ban a card - why not create a game mode where they don't have to be the bad guys?
Furthermore, data taken from the "most banned cards" in this new game mode could be used to make informed decision on what players are enjoying/disliking most about magic the gathering.