A pick list is a kind of check list (list with checkboxes) that is used to make selections of items.
A good example of a pick list is a shopping list. A number of (the many) items of the list are checked, and then the checked items are collected. That is when the check list (select items out of many) becomes a pick list (a list of the selected items only).
So therefore this feature request: a view mode for checklists that hides all unchecked items.