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
It’s infuriating there is no real way to back up switch saves at all without a subscription. It’s a portable console which is even more likely to have issues than a traditional one, I already had mine stolen once and lost everything. Now I just play on Yuzu and I can backup whatever I want.