Dynamic Taxonomy Structure

Well my problem is I want a very dynamic site structure which seems easy at first but I'm stumped a little and it seems maybe it's an easy answer...

First, I want a hierarchical structure but in many associations. I only want content to really drop into 1 bucket and the rest of the tree to get populated... For instance.

Manufacturer
--Size
---type
----Subtype
-----Product name
Manufacturer
--Size
---type
----Subtype
-----Product Name
---type1
----Subtype
-----Product Name

Now all Products get a size, type, subtype attribute. But I already know these when you select the product name. So my theory is (and this is all user generated content want them not selecting things where they don't belong) they select the product and and the content gets dropped in all those parent categories. This way when you browse to /manufacture/size/ everything for them will be listed or /manufacturer/size/type/ same thing.

Now the tricky part... I want people to be able to go to /size/ and view everything in that size of product or /type/ and see everything for that type. Now I can do this up to the level of Product. Simply by having everything live at the root level and then also placing them under all the other parent categories it creates all the tree's needed. But when you get to the Product Level which is unique to a company, size, type, subtype is when it doesn't work. Because if I add Product to Subtype it will show up under every manufacturer.

It's almost like I want a flat taxonomy however I don't want users picking wrong Types and Subtypes when they choose what product they are posting about. Does any of this make sense.

I did find http://drupal.org/project/taxonomy_dss this module and almost sounds like what I want but is for Drupal 5... Is there anything similar for Drupal 6? Or maybe I should just start porting this one, but looking at the code it seems really code intensive.

If anyone has suggestions let me know. I've done this in custom environments but Never in drupal.

Thanks in advance!