I suppose that a power reserve complication does not quite incite high passion like a date window does. Still, I have been thinking about the topic somewhat and would like your opinion on the feature. Personally I like the watch to be as clean as possible, so superfluous information should stay off. A power reserve I find useful at times but not always very well executed. My absolute favourite solution is to have it displayed at the back, so that one can actually check it when necessary but that it's not present the whole time (a la Saab's Night Panel of years gone by).