I don't think this is the criterion you want - if I won the lottery, for example, my to-do list would explode with all the new possibilities presented before me; however, if that happened, I certainly wouldn't consider it a bad day. :)
Good point, I had in mind that all things being otherwise equal and being occupied with more or less the same stuff for the duration of the existence of said list.
"I had in mind that all things being otherwise equal and being occupied with more or less the same stuff for the duration of the existence of said list."