Why allow picking champions in any game mode?

What if we just stopped allowing players to pick their champions, and randomized every game mode in League. 5v5 Summoners Rift, always Random and you get what you get. Would this have a positive or negative impact on the game? Would it make the game more fun? Is being able to choose your champ fun or not? Which do you prefer and why?
Report as:
Offensive Spam Harassment Incorrect Board