Pro League would be better and resemble traditional sports more if there weren't separate comms
This is going to come off extremely unintuitive for long-time League players but imagine if the standard in pro play was joint comms between opposing teams. Think about any traditional sport and you see why this would be a potentially valuable addition to the game. Sports players aren't running around with microphones and earbuds in their ears to hide their strategies. Instead they use the age-old human tradition of a codified language.
So what benefits would this realistically have for the pro scene? For one it makes it so comms can actually be shared with spectators, just like in real sports. if players are worried about the privacy of their strategies they can simply put more resources into codifying their communications more rigorously. The game would then have the added dimension of the real time intimacy of each team's dynamic.
And I think the hypest addition of all would be the dynamic between both teams. Imagine friendly banter and trash talk in real time. This would not be trivial content. Real player and team rivalries would come alive and take on a new significance.
I don't think Riot would ever add this because I honestly don't think they have the vision, but more importantly the balls, to take the game to that level. I think a good portion of the current pro scene would drop out due to the added pressure this change would apply, but I think it would incentivize players like Doublelift, Uzi and Dardoch who enjoy banter and flexing on opponents to excel and really shine as personalities as much as players.
I think it's safe to say Pro League would almost never be boring after a change like this. There would be significantly less snooze-fests. It kind of adds the best parts of the pro scene (top gameplay) with the best parts of streaming (good banter). Player personality could become a more significant asset with real consequences in-game rather than just a nice addition that makes you like a player more in interviews.