We all know that the type of person who does a card reset is desperate to keep things as they are. Even if you remove the ability to reset a card when it's still Flawless, they will still find a way to get around it. They will pause the ongoing carry or whatever it is they're doing, solo/duo queue into a random match or two and quit immediately. AFAIK there still isn't a penalty for repeatedly quitting Trials matches, so they don't even have to throw the game and take the deaths - God forbid they have to lower their stats at all.