This system really takes a big **** on support mains...
Honestly, what does a support have to do to get an S? Well, obviously taking part in 75% of all team kills doesnt count, tanking doesnt count... Honestly, this system is totaly biased against supports. "What? You didnt do damage? Well, then you dont deserve an S" Only difference are healing supports, cause at least they still get big numbers... But utility or tank supports are just ask to bend over and take it without making a noise, when you basically carried your ADC on your shoulders the whole game, gave him a freaking pentakill which cost your own life and he gets an S while you get an A minus ...