The Joy-Con issue affects all units and has nothing to do with the human body, although that obviously makes the problem worse. After five or so feet away from

The Joy-Con issue affects all units and has nothing to do with the human body, although that obviously makes the problem worse. After five or so feet away from the console, the Joy-Cons begin to respond intermittently, making proper gameplay impossible. (This is with nothing between the console and controllers.) The issue lies partially in the design of the antenna. The right Joy-Con has a better antenna, which alleviates the problem to a degree. I don't know how this could not be caught before release. A hardware mod can fix the antenna issue; a courageous user can solder a bit of wire onto the antenna to significantly extend the range. The point is that the left Joy-Con is poorly designed. They may be able to solve this issue by raising the gain on the antennae, at the expense of a significant amount of battery life. I don't know if they'd have to go through the FCC for this. The screen issue isn't that the screen is plastic, it is that the dock itself damages the console. It takes a day or two with heavy use.