At this point i think its obvious the game is about to be dead, bots running wild in low mmr, nobody is playing in high mmr, nobody is streaming it anymore as there is no competitive play so nobody is interested without ranked or anything to play for, queue times are long so matchmaking is completely fked, and its not a couple new champs every 2 weeks or a month that will solve any of this.
Personally i think the only thing they can do is close down classic for some months, then re-launch it as the season 3 worlds patch that phreak said he has, with every single thing that was in the game at that point, no modern skins or any of that bullshit in it, ranked and normal games available, no