Private categories padlock icon

[nathank (Nathan Kershaw)]

@downey

Is there any easy way to bulk-change these icons (for revealed categories) to the unlocked icon?

This Theme component does that nicely:

Category Icons

This theme component is deprecated and should no longer be used. Its features are now in Discourse Core (see: Bringing popular features to Discourse). For private category icon customization, refer to this topic. Summary Category Icons allows category badge links to have icons next to the category name. Preview Preview on Discourse Theme Creator Repository Link https://github.com/discourse/discourse-category-icons …

It seems much better. Why not change this in core?