User blog comment:Bgscurtis/Unorthodox playstyle - countering the current meta game/@comment-137.49.216.123-20120720212621

Your mid-lane champions would be unbelievably underleveled. If the supports there also leave to go out to the other lanes, they'll suffer an even greater level penalty. Further, you're running two supports. Late game, your supports are almost deadweights because they have no farm, and not nearly enough levels to be of much use outside of tossing in CC. If your composition backfires (which it can, very,very badly) you're going to end up getting rolled by the time mid game hits.

The meta exists because it is the safest composition to play in. Idiots will blindly adhere to this because "that's what all the pros do, durr hurr." Breaking the meta is far better for surprise tactics to gain an upperhand on your team, not to just stick to your fellow LoL players.