I got a response saying basically that they didn't see any reason for the feature, since you can't see the screen while firing. I pointed out that for some applications that isn't true, and pointed out all the other information they allow live updates of (temperature, wattage, etc.). They were unswayed, and told me they didn't have any plans to do it.
I did come up with a bit of a workaround -- I programmed the LED to cycle through a series of colors while firing. I set it up to go through five colors in the order they are in the rainbow with one second for each. (My non-firing color is blue, so I chose red, yellow, green, cyan, and purple). Now I can watch the LED and count the seconds. I hope that helps, since I wouldn't hold my breath for them adding the feature.