I think the triggers (from my understanding) should help with racing games for example, i.e. like a force feedback wheel. They should theoretically allow for better control of the throttle going into corners when the player can feel some physical resistance in the fingers.
I was also curious about how the dualsense performs with older games which don’t have haptics. I play a lot of backwards compatible titles so I wonder how the internal components manage to replicate the old rumble with the new technology in the controller (like playing Dark Souls & classics like that).