Drawer event enhancement - AfterLoad/BeforeOpen/AfterOpen/BeforeClose/AfterClose

Would be great to see these added to help round out the existing BeforeLoad.  

All of these are possible via snippets/javascript but seems be a lot of community activity on drawers so having a declarative method would make things much simpler.  


Further thinking…

If this is something that will be considered, one approach could be to publish the events as Phase I and then Phase II could be adding to page builder.