Idea Summary
Possibility of the LOV shared component receiving a parameter to use as a filter in the where clause. when a page item depends on another page item to filter, we have to use sql statment. but the same query will be used in multiple pages, so it would be better to use LOV shared component.

Use Case
When you have two page items, and the first is parent item of second item. In first item you can use shared component, but the second item you have to use sql statment to use item in where clause.