Despite all the improvements, Leaf/Fit-ev/etc... There are too many horror stories circulating, many justified, about batteries dying prematurely and OEM's not wanting to cover them. That scares the non technical away for the product.
My Fit EV is known to lose over 50% of its range with temperature drop, IN theory it won't bother me because I only need 20 miles round trip to commute, but I could see that being a deal breaker, I've had several former owners walk up and talk to me and the range drop was always the first gripe. At < 32 some were seeing 15 mile range..
I'm considering a engine block heater in the battery loop for winter, What honda don't know....