I think that a fan cooled 5-7kW charger that fits into the tank, same way the power tank does, would be a fantastic addition.
Making it so this option can be fitted to the 2013 > 2015 range of bikes would also be a good move, I would not buy a new Bike just to gain access to such an option, but I would consider purchasing this sort of high power onboard charger it if it was able to be fitted to my 2013 bike.