Preventing display of offtopic files that are somewhere deep down in a category branch

[prototyperspective]

Ideas on how this could be done:

Certain subcategory types could be filtered out or become filterable such as "xyz in art" subcats (e.g. "Maps of the world in art" underneath Maps of the world") and there could be a lower default subcategory-depth level so that it only goes through the highest 5 subcategories (the latter would be a temporary fix or one could make it so that one could load more images deeper down on request/when scrolling [infinite scrolling]).

I've also mentioned this here. I came across this issue when lots of nonmicroscopic images (and entirely unrelated) showed up when running it on Microscopic images relating to biology.

This is a really great and underrated tool but it usually never works (I commented underneath a closed issue about this). Here I made a relevant proposal which maybe could make use of this tool or parts of the code.