The design of content in this game is fine. It's the systems around it that fail it.
Our right to play this game how we want and to protect that right is also perfectly fine. That is really the most basic right we all have.
The point everyone misses is that if you want to fix this issue you address the origin of the problem. You don't get caught up in what this topic has become. The origin of this problem has nothing to do with the content. It has nothing to do with player interactions. You go back to before any notion of how we want to play this game is established within our minds and you influence that. It's like Inception -- you have to go deep into their mind, plant an idea at the most basic level, and let it blossom into a result.
And, like I said, that root element is care. You need to change a bad player who doesn't care about improving into a bad player that feels the need to improve. You need to change a good player who doesn't care about helping others into a good player that feels the obligation to help others. Any discussion that actually wants to get anywhere has to provide real solutions aimed at this change.
A grading system can accomplish this. But, this iteration won't. Like I said, this system provides no real reason for a bad player who is content with being bad and playing with other bad players to strive to improve. It also provides no real reason for a good player capable of helping others to actually do so. So long as they do their part and nothing more, they won't have to deal with bad players.
It doesn't build a bridge between the two extremes of players. Rather than force a community to sink or swim together, it deepens the fracture between the extremes by breeding more toxicity at the lower end and fostering even more elitism at the upper end. And, what we'll see is playing out in this topic -- the reasonable moderates just get caught in the whirlpool of conflict between "bads" and "elitists."