Q - What?
A - Dropdown search 

Q - What could it improve?
A - Allow the creation of a dynamic list from the search field.

Q - Who would benefit from that?
A - We know that the dropdown needs a list, and usually the data is taken from an aggregate.

However, it is not possible to send all the records to the list, if the database has thousands of records. And if the user searches for any valid data that is not in the list, then Dropdown will not return any records.

So, if would had a handler to capture the data while the user types in the search input, from this handler we could make a new query and update the list dynamically with the data's filtered.