User blog comment:Hyperion602/DotA 2 Style Lane Setups/@comment-11089105-20131216010309

The problem with a trilane is you'd have two regular champions, and three severely underleveled champions. It would end up a game of watch the two solo laners crush three people at onces. Therefore, you'd need to have the solo laners be body guards while the rest of the team try to catch up or they'd just feed. (In my opinion that is)