Wikipedia:Ability to follow subcategories recursively

One should be able to follow the (every or some of the) subcategories of a given category. This feature will even help prevent vandalism Uni3993 (talk) 18:20, 24 July 2016 (UTC)
 * This appears to be a follow-up to Village pump (technical)/Archive 144. -- Red rose64 (talk) 20:03, 24 July 2016 (UTC)