We don't use the haptics of the controllers much at the moment. In fact it only gets used when switching tools with the new Quick Wheel at the moment.
Some Ideas:
Haptics when there is a PDA notification
When the survival meters on the left wrist this might be even more helpful (#11)
Haptics when you open the PDA
Rationale: When having hands down might be hard to notice that you got a PDA in your left hand when using the right hand to interact with lockers and stuff.
Haptics when you can interact with something(basically when the reticle on right hand shows).
We don't use the haptics of the controllers much at the moment. In fact it only gets used when switching tools with the new Quick Wheel at the moment.
Some Ideas: