Dynamic Que wouldn't be so bad if....
it was much easier to make teams. If you are playing an MMO, you chat up some players in town and oh whoops you joined a guild and now you're doing quests together and suddenly the game is more fun than before! In league you avoid friend requests after games because ew I don't know you go away weird person on the internet.
If it was easy to form teams, suddenly team work would be an actual skill necessary to gain elo in a multiplayer game. Imagine if you had a guy troll/afk too many time and you could just boot them from the guild.
League is currently set up such that you are encouraged to stay largely anti social (even in game) and then we wonder where these toxic flame fests come from. If it was possible to get easily chat and join each other's groups in client, dynamic que would actually get a chance to work instead of just ruining everyone's solo experience.