MediaWiki core uses separate rights for editing user CSS and JS, and will[1] also have separate rights for site JS and CSS. This would make the extension more consistent with that.
[1] https://gerrit.wikimedia.org/r/#/c/154452/
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=8834