I absolutely agree with this. Battery tech is VERY rapidly changing and retrofits would be very cost prohibitive. This is why I’m planning to have a 3yr lease for my EV Truck. I think there is a decent chance someone will make a 1000mi EV truck by the end of the 2020s.I think it is extremely unlikely that Ford or other companies would offer battery retrofits for existing vehicles. Batteries are still incredibly expensive and specific to the vehicle in which they were installed. Even Tesla that touted the prices of batteries coming down over the years has not offered retrofits for their older vehicles. Identical battery replacements are $22k, and the packs are simply "refurbished." They will not even sell you a 100kwh pack for an 85kwh car. With the limited production numbers of the earlier trucks, there is even less incentive for Ford to retrofit a battery vs. buying a new truck.
With drivetrain efficiencies between 90 and 95%, there is really no point to limiting power output. It is not like a gas car that uses more fuel when under heavy load or at certain portions of the powerband. In fact, even if I launch my Tesla hard from a stoplight, my overall energy consumption does not change unless I have to use the mechanical brakes or I drive significantly faster than the speed limit, either of which are irrelevant to the amount of power that the car makes.