Hi,
Maybe I am missing something, but if not, please consider this as a suggestion for an update.
Currently, if we set Cornerstone to be used as the default editor for blog posts, there is no option at the post Settings tab to check / unckeck it as a sticky post. First, we access the WordPress dashboard, after that we go to “Posts,” then adjust the post’s Status settings, and only after that return to Cornerstone to edit the post. That’s a long way.
Please consider adding another toggle to the post Settings tab inside Cornerstone to access that option quicker.