So lately I've been 1v1ing, and about 15-20% of those games, regardless of me saying "Mid only please", people still try to tri-lane, making it hugely unfair. Suggestion?

Simply add the option to make creeps spawn from only one lane in a 1v1, or even every other mode, and make towers from every lane but middle lane (obviously) invulnerable. If this suggestion has already been made, I apologize for that, but I could not find any.

Just for more clarification, the reason why is to make things more even in a 1v1. I'm sick of people joining my "1v1 <gamemode here> mid only> games and starting top or bottom, it gets ridiculous.

"But what if his hero completely counters mine?!"
Tough luck. That's how 1v1s are.