Keypad number lights
I saw a few suggestions about lighting up the numbers (0-9) along with the usual stay/away/off/menu buttons. I agree. When its dark, trying to find that first digit of your PIN number is a challenge. I usually have to turn on a room light to start the process. The numbers light up after the first digit, but at that point it is a bit late.
I too am ok with a decrease in battery life to have this feature.