This would allow us to implement custom search/filter bars on top of lists.

This ListHeaderRevealComponent would initially be hidden, and would only be revealed by scrolling up, as often seen with search or filter bars on iOS (this behavior is easily implemented using Swift).

Scrolling to the top of the list (for example by tapping the status bar) would scroll to the top of the first item in the list, not to the top of the header component.