If a feature is feasible to be added as a part of nUI Scott will usually add it. Like the fact I was using 2 addons to display numbers on my action buttons for cooldown and debuff timers soon became a part of nUI as the cooldown side was already there and groundwork for the debuffs there too.

Adding extra functionality which is different class to class will obviously take time if it is feasible at all but as has been said things like that have been added to the list of future enhancements but they will take time.

He is only one man after all.