KDR isnt a good indicator?
What is then?
You'd have to agree players with higher KDR usually move better, perform better, understands their class and other classes, able to counter, know how to position themselves, and knows which target to focus.
KDR is possibly the best indicator we have at the moment.
You will only have very very few players with good kdr that absolutely sucks like Onepapa. Thats it
Mini win/lose is absolutely BS.
YOu can join a mini last minute and get a win/loose.
You can completely avoid pvp to win mini.
So no, Mini win/lose is bad idea