Charging? I don't think the chargers on my 2017 FXS or 2018 SR are capable of any higher charging rate. And if they are, it would likely compromise their longevity.
Range? So open up the margin between the gross battery capacity and nominal capacity? How is this going to effect the battery longevity?
Power? Programming the controller to feed more energy to the motor? How is this going to effect motor temperatures and thus longevity?
Not being an electrical engineer, I would be hesitant to override the settings of the engineers at Zero for fear that it might screw up some pretty expensive parts; charger, battery, motor. And Zero isn't going to warranty anything on your bike (assuming it is still under warranty), if during the inspection for warranty repair they discover you have hacked into the system with custom settings.
On the other hand, if you are simply replacing a 12v battery on a BMW or Porsche and you need to go to the dealer and spend $100-$200 just for the mechanic to plug in his computer and tell the car there is a brand new 80aH battery in the car, then I am all for finding a work around to that. And I have purchased relatively inexpensive OBD controllers to do just that for various cars I've owned.