As I had no experience with Valve’s products, but rather ps4-5 knock-offs, I want them to have one or two scrollwheels with a sensory feedback in the future.
Switching radio stations like in old timea, adjusting your cam’s focus in Outlast-likes, rolling the roulette while gambling in some Yakuza game, switching your equipment in some stealth game - it can certainly has it uses if it wasn’t too weird.
But what idea or part would you like to add to generic controllers and schemes if you had an authority over that one an you had studios to follow this quirk?
I still have and use an Xbox360 controller despite not having an Xbox. The fact that it takes AA batteries and I can just pop out my rechargeable ones and swap 'em onto a generic charger instead of having to hook the controller up to a special charger (and then wait / use it with cable) is quite nice.