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
Switch 2 not being backwards compatible will unfortunately be a deal breakers for me and I’ve owned every Nintendo console/handheld they have made.
Getting a Steam deck and immediately having access to every game in my steam library is a huge deal and made me realize it’s a must for a switch 2.