A Polite Suggestion
I do truly believe that there needs to be a function that allows players to report others in the pre-game lobby. The punishments associated with being reported through such a system do not necessarily need to be as severe as the existing system, but there does need to be something there. The reason I am suggesting this is simple: There are often players, especially if not exclusively, in the lower 'elo' ranked matches that refuse to communicate with the rest of the team.
This often results in one, if not more than one, of the following things: The team ends up with players trying to fill redundant roles (i.e. two tops, double jungle, etc.); Immediate toxicity; a severe handicap resulting in a swift, 'unfun' loss(the most common); immediate loss of LP and a temporary ban aimed at anyone willing to do the rest of the team a favor and dodge from the lobby.
I strongly believe that none of these are acceptable circumstances, especially when the players that cause said circumstances to come about are rarely(if ever) punished for doing so. Thus I believe that one or both of these options for a solution should be implemented: A system that allows players to report a player in the pre-game lobby; removal of the LP penalty for players who dodge the ranked queue.
I would like to see one of these solutions implented swiftly, though I am patient and am willing to wait. I also would like to encourage my peers to post their ideas for solutions for this very prominent problem.