That reminds me, I should have mentioned an even more backwards design which is that of the vent placement on my older Thinkpad X1. It has the air intake vents on the bottom, they relied on the little rubber feets to lift it up for correct airflow. I pretty much could not use it on my lap because of that, it got too hot even during smaller tasks. But to be fair, I've noticed similar placement on several HP/Dell laptops (or notebooks?) that I had at work too.