I don't see the problem. You might waste five seconds trying to score a list and finding out it isn't possible before moving on to the next one. That's simply not much of an issue, in my mind.
Some authors set up a list as a plan of where they are going to collect planned quizzes, and add them as they are written. I have a couple like this, but since I already had multiple entries for most of them when lists were established, those ones were never empty. For my current ones, I choose to keep them offline until the list is up to five, then put them online and add new ones as they are written and online. But there are authors who really want the very first players of a new quiz to see the others in the list. And there may well be some who want to set up the list as a kind of "Coming Attractions" - hence the possibility of a list with no active quizzes yet. The first ones may well have been submitted, even if not yet active.
(Editor in Humanities, Religion, Literature and Books For Children)
That's all, folks!