I've seen people carry some ridiculous amounts of carry-on onboard and I truly wish CX would enforce their own policies a bit more. It is not fair that I don't have space for my backpack because someone decides to bring 15kg onto the plane (14kg of which they probably won't even need at all throughout the flight), or in my case last year, 2 people who brought multiple sport equipment bags that took up 2.5 overhead bins.