Hierarchical keywords: hide parents

Is it possible to hide the parent keywords when selecting a keyword? That parent keywords are implicitly selected is of course perfect for searching, but I rather not see them when selecting a picture or set of pictures. Suppose I have categorized the keywords for animals on my images with a fair amount of precision. If I would add the Chimpanzee keyword, it would also show the Animal, Mammal, and Monkey keywords. That would distract from the actual keyword.

The optimal approach would be that implicitly chosen keywords are hidden, and explicitly chosen ones are shown. This would allow for marking a picture with a Chimpanzee and a yet uncategorized monkey with Chimpanzee and Monkey. Does this make sense?

Kind regards,

Jeroen