While bulk editing master features or features, I would like to be able to assign someone to several features in one click.
Good news - this is already available!
In a features or master features list you can select multiple items using the checkboxes to the left. Then click the blue 'Bulk edit' button at the top. On the bulk edit form you will then see an option for 'Assigned to' about half way down the page.
Let us know if that doesn't take care of it for you.