This is a weird one, but I’d love to see a reimplementation of the sensor bar. The gyro controls haven’t cut it for me. I like how the Wii U game pad had the sensor bar built in to the bezel. The real engineering nightmare would be squeezing IR cameras into the top of the Joycon
…On the bottom. One on the top that can work in tandem with some sort of sensor bar would have to be squeezed in above the R and ZR buttons.