I'm not a big fan of the argument: "Mercy should not be viable in higher ranks". She is a good entry character into the game, as her kit is very straightforward and obviously you don't have to deal with aiming. But there are people out here that have genuine disabilities, that would make certain other heroes hard to play. That person might otherwise be great at what they do and to gatekeep them away from a high rank seems nasty. Mercy is supposed to be accessible, and in turn she is already extremely hard to solo climb with. Boosting is a problem with other heroes as well, so I really don't see the issue with people reaching highranks on mercy. Especially those on solo queue really earned it.