We would like more options for quick visual cues for fuel level. It can be hard to read the number in the gauge, and the color doesn't change until it gets pretty low. At the very least, we'd like more color changes during the fuel consumption, if not the ability to choose which colors and when they change.
Ideally, I'd like a gauge of some kind, even just a sectioned bar graph, that indicated fuel level in at least 10 sections, if not 20. This could be done the same way the throttle level is shown, but horizontally, and with either color that changes along the graph, or where the whole graph changes colors as the level changes. It could also be done with images, like some other programs do. Just set it up so that a set of 10 or 20 images are used, and then we can even have user selectable fuel gauge sets in different styles.