Rome was not built in a day
Right now this is as good as they can do, but I work in energy management and know what's in the pipeline. Given the chance, five years from now you'll be seeing electric cars with 200-mile range and a four hour full charge time. Just stop expecting the prototype to be the finished product.
That said, the fog lights always being on when in drive mode is a major design flaw for the Leaf. Quite apart from it draining the battery, I really don't see how a car can be awarded 80% when it's technically illegal to drive it in the UK.