Make slug parts translateable

[deckerweb]

Currently I have such URLs when using the faceted search:
search/keyword/aroma/type/product/

---> I would need that translated, in my case into German, then I would have the above as:

suche/schluesselwort/aroma/typ/product/

so, the following would need translation:
"search"
"keyword"
"type"

In this example above, I doubt that the post type ("product") could be made translateable too? Would be awesome, but I have no idea other than to use/map the lower case string of the singular post type label?!?

---> for me personally the tweaking via a language file (.pot/.po/.mo), or a filter would be enough. However I could also see some benefits for a global setting, or on a per widget basis, or via template tags.

What do you think?
Is it possible to implement that in the translation files and/or making those slug parts filterable?

Thanks!
-Dave :)