Battlegrounds
As far as Battleground goes those who pay to play should be separated from those who are free to play that way it separates everyone into a specific category that way there's no complaining about cheating or unfairness allow the people who pay for everything to go up against those who like wasting their money this right here would keep the game fair that way those who play for free won't have any reason to complain because they'll only be playing against free to play players this would actually give those who pay for everything a much more difficult to challenge which I find to be fair since they want to spend their money.
That's why free to play players should only be playing against free to play players and those who pay for everything should be playing against those who pay