Implement prime (like CSGO) to the game, to prevent smurfs.
Riot Games Support on Twitter
Have been absolutely run over by smurfs in my recent games, and I am honestly tired of it, and my teammates losing their mentals as soon as we load in.
I think it would be a wonderful idea to implement the form of a prime system, which that you have to include some form of verification (mobile phone) etc, to make prime queues.
It won't stop smurfs, but it will for sure keep them down, and most importantly, ranking up for people will be easier.
Hopefully someone will look the idea up, and to all the challenger smurfs looking angrily at this post, I am sorry, but it is getting annoying.
If you want to discuss this topic, I am open to talk about it.