Request advice on a taxonomy menu generation module and version known to work with terms with multiple parents (and descendants)

I still can't find a stable module that will handle taxonomies with terms with multiple parents, in a way that will integrate with menu systems like nice menus. I have at least the following ways ahead:

• Drop the Nice Menus over Taxonomy TreeMenu (which is not catching reparenting of terms, i.e. MVC is broken, or I can't learn how to make it work because nobody will tell me, and I don't get answers to postings) or Taxonomy Menu (which has mangled my entire menus, and breaks on terms with multiple parents, although somebody else is trying to fix/hack it). This means launching the site with just a site menu, which turns out to be a bit too hard to navigate for a user even for a modest sized taxonomy, or certainly it is not as useful or compact as Nice Menus in my case.
• Keep waiting for who knows how long for some solutions and or feedback on the matter.

Using terms with single parents is not an option for the site, as one of the main points of the site is to use attributes of products, not just noun-based categories.

C'mon Drupal fans ! There has to be somebody out there who uses terms with multiple parents and can at least suggest a sensible way ahead for me.

After weeks spent with Taxonomy Menu and Taxonomy TreeMenu (while nevertheless grateful for attempts by others to fix them) I might have to do it properly myself. I could use this as a good excuse to demonstrate UML-driven (or at least UML-supported) Drupal module development, with binding to Drupal docs, while learning more about the Drupal menu and taxonomy systems.

Webel