Unfortunately that seems to be always the case when it comes to categorizing. Few people are interested in categorization at all, and
IMO there is no point in discussing it at the present time. I've tried it and failed.
We have to make categories useful for commons, and that means turning them into a tagging system (what they technically already are). And that can only be accomplished by getting category intersections to work. That would also mean getting rid of the "most precise category" paradigm.
* Who needs a category "Bridges in Swizerland" when you can tag images with "Bridge" and "Switzerland".
* Who needs small browsable categories when you can have small browsable intersection results (and galleries for that matter)
So when we get the infrastructure we should have the discussion, and create a stringently enforced policy on the issue