There is no reward for playing well.

[Claustrum]

The problem is there's not really a plausible way of doing so. Riot, Valve, and Blizzard would have devised a solution to it many, many years ago if an automated, hands-off system like that were plausible.

Riot, Valve, and Blizzard all have a larger pvp playerbase which lets them mix things up easier, and they also don't have a pvp system where it's "winning = +1 point" and "losing = -1 point". It's usually more like "Okay, you lost, but we put you on a team with people who are all ranked lower than you, so you won't lose quite as many points this time." Granted, all of these companies have their own pvp issues, which they are handling in their own ways, but these forums are for FFXIV.

Also, this does not excuse the "WELL IT'S NEVER BEEN DONE SO IT CANT BE DONE" argument.