For play in my environment, 8 hours is a little long for The Fortieth Annual Subcommittee for the Preservation of Planet Earth. The concept of a countdown clock is important, but a shorter one would keep the game more focused.
In Crime & Punishment, my ingrediants and time are pretty core and critical.
in the time arena, and that is to expand the rules was the option to play the game as a series, so to allow maybe for character advancement, plot arcs, etc.