The drawer is often the main content you are interacting with on a page. I'd like to see the drawer become part of my browsers navigation state and history.
Ideally, you could refresh a page with a drawer open and it would be stay open.
You could share a url of a page while viewing a drawer and this url will open with the drawer open to the same content.
A bonus would be being able to open a drawer, navigate to an item within the drawer, go back via your browser and land on a page with the drawer open like you had it.
Sorely needed, annoying that the pane a lot when scrolling through tasks and you want to keep it open