for my Portal I absolutely need a way to filter data on terms and node types.
I have several node types (7, at the moment, which are extensions of the standard story module), and some of them share the same vocabulary.
As an example, I created a 'Geography' vocabulary, which represents a tree with all the Italian regions and Italian major cities.
In my portal, which will deal with choral music, this vocabulary is linked to events, choirs and resources.
Another vocabulary (genre) is linked to choirs, events, weblinks.
This takes me to the point where I need to extend taxonomy in order to be able to do this:
to filter out or to feed only choirs and events dealing with terms 143 and 145 (which are 'pop' and 'jazz' music type)
For this reason I hacked taxonomy module and taxonomy_html module in order to add this functionality.
After the list of terms, you can specify a list of comma separated node types, and it works fine. It works also with feed.
Before going on with the tests, I would like to know if someone else is working on the same functionality, in order to avoid duplicate work.
Furthermore, I would like to use a 'standard' Drupal, so I would not like to have an 'hacked' functionality on a 'core' module like this.
Since I think this feature could extend tremendously Drupal possibilities (I'm really in love with Drupal...), I would like your opinion on this matter.
I'm also available to send you the code by mail; unfortunately it is not published yet.