Yeah, I hope so. It would be better if strict mode was kept in thought for koa related devs though. I think it does make sense to go along with future standards. We have to keep in mind that if strict mode exists it is because it was impossible to impose those changes without breaking the web but that if the TC39 guys could have done it, they would have. And I admit they do know better than me what JS shoud be even if I don't understand every single choice they make ;-).