I would like to have an option on the keypad to always illuminate the alarm status led (disarmed, home, away), even if on battery power. It would be just as useful and use less power if it did this only in one of the armed states.
I want to do this so that my family can more readily see the alarm status without walking all the way across the house. It’s convenient to glance at the keypad before opening a door to walk the dog without setting off the alarm or glancing to see if someone else has set the alarm for the night.
The powered mode provides this experience, but it isn’t always practical to hardwire, or the look of hardwiring might not be desirable in all situations.