In reply to ugh...

I'd say that if you're dealing with code, might as well also add the support to deal with them in different folders too. Isn't the Editor also the Appearance > Editor, where you could edit theme files (edit the child theme, not the parent theme).

It's not a biggie, but I've had to install a plugin WP Editor to currently deal with browsing a few more folder levels deep e.g. /inc/snippets/snippet-featured-banner.php.

Kind regards,

Mic