This plugin disables the visual editor for all users across the whole site. You could also remove the wp-includes/js/tinymce/ directory.
This checkbox should disappear when you delete or rename the
wp-includes/js/tinymce/ directory. Remember you will need to delete or rename this directory after every WordPress version upgrade.
Short answer: maybe.
By all means please contact me to discuss features or options you'd like to see added to the plugin. I can't guarantee to add all of them, but I will consider all sensible requests. Click here to contact Callum.