Cottonwood
Roadster#433, Model S#S37
I know there has been a lotta "would be nice's", and here's another.
When plugging into SC - an info screen pops up with current conditions expected to the next SC (either direction). And an advisory on charge level needed (plus buffer).
I use the Energy/Trip screen all the time to minimize Supercharge time, but be careful, I do not think that it includes current temps, winds, etc in the projection while charging. This will be a great addition when it happens, but I don't think it is in current releases.
When you start driving, the Energy/Trip screen certainly projects the last several miles' usage onto the rest of the trip, but that is often too late. It helps to figure out how much to slow down to make it to your destination, but the horse has left the barn in terms of figuring out how much charge you need.