Obviously, Nissan with it's vast engineering capability and talent couldn't get the "psychic" range-meter up to snuff, so I'm not going to try. This is one reason why I want to make a framework for people to add their own gauges to LEAFSCAN. This way we can work together on complex things like this, and maybe get something better.
As a long-time EV driver, I think the best range-meter is all this gunk behind my eyes! As long as I know where the battery level is, *I* know how I am driving, and can predict where I'm going. This is why I like the SOC shown in high-resolution. Watching it, you quickly learn how fast the Leaf sucks SOC down. Not only will this make you a better driver, but it also eventually teach you how to manage your range all by yourself!
We all already have this skill to some degree. For instance, when you walk into the bathroom and see how little TP is left on the roll, you probably have a good idea of how much you are going to need for this particular "outing"!
Experience tells you when to load another roll to avoid "anxiety". :shock:
Now eventually the computers in the car will learn how to do this, but right now they don't have a clue where you are going, what the weather is like, or even how many people are in the car. For now let's just update your built-in wet-ware and give it enough information to get the job done. You'll find it easier than you think after a short time with good information!
-Phil