After 1 month of ownership of a 2013 Leaf, here is what I would like to see most:
1. Ability to switch between "standard" 80% charge and "max range" 100% charge from within the mobile app. It is too inconvenient to have to remember every time I park the car to switch between these modes depending on my driving needs the following day.
2. I believe this has been requested before - ability to define a "standard" charge as something higher than 80%. The reason is that 80% is often too low of a charge for my needs. However, 90% is my sweet spot. Additionally the difference in battery degradation between these levels is negligible.