Problem: Sometimes, a category is too well tidy and a lot a sub-categories exists (that also have sub-categories). A user wanting to obtain a better vision of a whole category have visibility on the sub-categories (on top of the category page), but not on the sub-sub-categories (hidden by default). He needs to expand one by one the "blue" arrows of a sub-category.
Who would benefit: I mostly thinks about Commons, to help search files in a designated category, like a city category.
Proposed solution: I think a button/trigger/option that auto-expand the sub-categories of the current category. A limitation of one, two or three levels might be technically a need. A template can maybe be used to to force this parameter.
Support But I think that merging all subcategories (from all levels) to the current category would be more convenient for readers, in order to keep the alphabetical order. Both options could be proposed. Lmaltier (talk) 20:04, 20 November 2018 (UTC)[reply]
Support Consulnico (talk) 00:01, 17 November 2018 (UTC)