Apposed to popular belief, the CPUs are no longer the *hottest* component of a laptop -- the chipsets nowdays get extremely hot, however, alot of economy laptops do not monitor chipset thermals and instead, focus on the CPU thermals when the CPU gets enough airflow, however, the chipset gets next to none because it's stuck on the underside of the unit which often case, is always covered. That's why on some laptops, the area above the touchpad gets extremely warm, that's not the CPU, that's the chipset getting no real air circulation, potentially overheating.,.
Until laptops can optimize the thermals with components not around the CPU or near any heatsinks with proper airflow, laptops should NOT be made any thinner like they are.
Sure, the components are designed to take the thermals, however, surfaces (including people) that laptops are placed on cannot. I've had laptops sitting on a thick wooden desk that when you put your hand on the underside of the desk, you can feel the bleed of the heat. This is unacceptable and laptops designs should be re-evaluated.