Got you famSomeone probably needs to run temperature probes to test just exactly how hot the outer shell is getting during gameplay (docked and undocked).
If it can melt the adhesive on screen protectors, its not a good sign, in the teardown, they are using alot of shims to transfer the heat, it may be on of the problems.
http://www.gamersnexus.net/guides/2850-nintendo-switch-temperature-noise-and-throttles