It's useful with the latest beta having the ability to add images to a collection from the right click menu.
It would also be nice to be able to remove images from a collection by using the right click menu too - I think this would be far more intuitive than right clicking on the collection name and removing them from there.
So in the example below a "Remove from Collection: edit" as well as "Add to Collection: edit".
Ideally the "Add to Collection: edit" would be grayed out as the images are already in that collection.
Just a thought!