All chat mute
there should be 2 main mute buttons, 1 for each team
and talking to enemy is a pure distraction , just as when they talk to you whenever there is someone to report in their team
i know introverts aren't favored by Riot, but that change would save a lot of time for many out there who don't prefer the chat
P.S. since i started to mute every persons chat at the start of the game i became much less frustrated in stressful situations and my communication with players just as my map awareness also become better
so think about it