A recurrent complaint in the community puzzles area is the lack of proper naming for the test cases.
I feel a very small change could make most of them disappear, or at least stop appearing, overnight. Simply do not provide the default “Test 1”/“Validator 1” text in the boxes. It remains mandatory for them to contain something to submit, in the same way the validators’ input and output are mandatory. But this way, at least, the problem author is forced to consider what to name them.
Exception: the first test could have a default of “Example”, since it’s highlighted in this way in the IDE.