I have been trying out the timed page feature - in the absence of instructions.
Despite the warnings about unique page names, two or more can be defined. The first enabled page gets displayed. e.g. a second page can be displayed on the same menu link after the first has gone past it's end date.
If a single page is before or after it's view date, then the menu link is not displayed - which is quite neat.
So back to the feature request - on the list of menu links and list of pages, how about an icon to show if a page is time controlled and if so, is it pre, current or post active.