I think qlranks should have 'Opponent-score'. Meaning qlranks has a page within the players stats page/or straight on it, with every win/loss against every opponent. But it should only appear if the players have faced each other atleast 3 times or something, so it doesn't have too much 1-0/0-1 score vs alot of random people.

Why propose something like this? Well because it's a cool feature and everyone can look back on your match-scores vs your friends/players. And it shouldn't be hard to implement at all.

So why would this feature not be on site?

Up to you sirax :)