It would be incredibly useful if I could define access for reader groups for not only categories, but specific articles under a category. There are times where I'd like a certain reader to be able to read the category page itself but not any articles under it. It is not always useful for articles to automatically be inherited when category access is granted.
I have ways to get around this in the short term by creating an unpublished dummy article under a category and using the article access control workflow, but it is incredibly convoluted and imperfect. Particularly since even though the category is now accessible it does not seem to appear in any searches.
TLDR: There needs to be a way to explicitly state category AND article access without automatic and implicit inheritance.