"I have a high ping, so don't blame me for feeding"
Every so often I encounter teammates that play League with full knowledge that their network connection or hardware is slow and/or unreliable. Until about 0/3 they spam the chat in full caps lock with "MY PING! LAG! OMG OMG!", and defending themselves later by stating:
"Sorry, but my PC is bad" "Yeah, I play over WiFi" "My sister tends to stream Netflix over the same connection"
And every time I roll my eyes so hard, they must probably hear it. Why, for God's sake, why do you play an online team game when you know that your equipment is not suited for it? I never understood that.
So, to make it short, I'd like to have a change to the client. Make the client check the ping when queue starts and block players with a high ping from queueing up. Also, give players with high latency some in-client advices. Riot did a pretty nice information video about connection troubleshooting a couple of months ago, maybe link that too.