Bar people with bad connections from playing ranked
If you have a bad connection, it doesn't just affect your game but other people's games as well. The two most prominent examples of this are sporadic teleportation and taking damage while around a corner. For serious gameplay, as ranked is meant to focus on, this can't continue. I propose that these players with bad connections not be allowed to play ranked until their connections are better. A simple way of doing this would be to check if their ping is below 100, and if it's not to restrict their access to ranked, similar to how abandon penalties work though indefinitely (until they have a better signal) and to a lesser extent. These players can still play the casual game modes such as pubs and arenas. This will ultimately improve the integrity of ranked and make the experience a lot more enjoyable for everyone involved.