NES
the nes controllers ergonomic features are terrible the controller has absolutely no curves except the rounding of the buttons  this can and has had a major effect on the use of the users hand as having corner shaped dents in them  because the controller was griped too hard.

second off the buttons themselves. these buttons felt cheap and nasty as they were only little bits of bad plastic on top of a box made form the same material.

the functions of this controller were limited to 8 functions which is still a lot  compared to the Atari 2600 which had 5 however in relation to the wiiu's 20 which include two stick 1 dpad  and 9 buttons and a amiibo pad




speaking of the wii u the ergonomics of this controller is half decent in the way that  there are at least curves and dips to allow your hand to rest on the sides to hold the device in secure position making in much more acurate however that controller itself is too thin for a good grip and is extremely light and can  be dropped easily making its have damage done to it.

speaking of  damge the controller itself is very weak and has a tendancy toshatter the screen and the casing. this is a problem as if the controller goes then you are required to get a new console alongside the controller.