Team Captains for greater cohesion and teamwork
Dear Riot, I had an idea today after playing a ranked game where no one seemed to be in charge and the team never coalesced around any one player. My suggestion is to have a system where everyone on the team can vote for a "team captain." This would probably take place around the time the outer towers have fallen and the mid-game begins. At this point it seems to become very important that the team begins to group up in order to siege inner towers, take dragon/baron, etc. The team captain could be the most fed player, the one with strong initiation or whoever the team feels has the best tactical understanding of the game. I'm not sure what the best voting system would be but I know you have very smart people working for you that could test and find the best format. The important point is this: whoever is voted "Team Captain" would have their pings changed in some way as to be visually distinct from the pings of the rest of the team.
For example: So let's say your team kills 3 of the enemy team without losing anyone. Now 2 people on your team are pinging the dragon and 2 people are pinging the inner mid tower. Which do you go for? Then the Team Captain pings the inner tower with their own distinctive ping color or icon, and everyone (hopefully) groups up in mid and pushes the tower down, picking up dragon on the way out.
Of course people would still be free to ignore the team captain but I think it would help with teamwork and lower the overall frustration level that comes with scattered teammates. Also, if the team captain makes poor choices, perhaps a second (or third) vote could be called, maybe 5 or 10 minutes after the first. Has this been considered before? I feel like I can't be the first one to have thought of it.