Filter Support for Taxonomy Hierarchies

Current Taxonomy module allows the user to define a hierarchy of terms. For example, in a vocabulary I can add the term "Computer Science"; then I can also add a term "Computer Networks", and specify that its root is the computer science term (i.e., computer networks is a sub-category of computer science).

Let us suppose to have two publications into Bibliography, let's call them pubA and pubB. Suppose also that I add the term "computer Science" to pubA, and the term Computer Networks to pubB. If I apply a filter on the bibliography, based on the terms, I would expect:
- filter based on term "Computer networks": pubB only
- filter based on term "Computer Science": both pubA and pubB, since pubB has been tagged with a taxonomy term that is a particular case of computer science.

Unfortunately, it seems that current filter access does not explore the taxonomy hierarchy: this means that on the second example (filter on the more general term), the more specific taxonomy terms are ignored.

Would it be possible/interesting to investigate such behavior?
Many thanks in advance!

Federico