We've just had the following back from our Developers in response to your suggestion:
"Developers claim that Samsung Tablets currently do not have AOD functionality as their displays are LCD and there is a power consumption issue that prohibits AOD functionality on these displays. However, there is a similar function to AOD, which is the 'Daily board' function. This can be used in settings when charging the device. Unfortunately, the option is not available when not charging."
Hope this helps!