Features _can_ be used, but they break the (UX) logic. At the top bar, I can add a menu item 'brands', which shows all the brands. If I choose a certain brand, I only want to show the the product lines of that brand to the user in the 'product line' filter. As far as I understand, what you propose, whatever brand I choose, I'll always have the same features shown on 'product line'-filter (for the client). For the shop admin, the link between product lines and brands is not clear, which again, from a UI/UX perspective, is not really what I want: one could easily add a certain product line of certain brand to another brand. If it can happen, such (human) errors will happen. A Good UI minimizes these kind of 'logical' errors.
I mean, it _can_ be done, of course, but it doesn't mean that it is the best way to do things - there are (almost) always ways of 'abusing' a system to make it work like you want. I just prefer not to (it always hits you in the face in the long run) :p.
Or: since there is no support for product lines (coupled to brands), I'll need to fallback to a less elegant, more error-prone solution (which will require more maintenance/mental effort).
Besides this, I seem to fail to add faceted search to the shop: I added a feature, I added that feature to a product, indexed and rebuilt the stuff, but there's still no search somewhere in the classic Prestashop theme (see empty box in the left column, that's where the faceted search is supposed to show, I guess?). Does the classic (default) prestashop theme supports faceted search? (I have the 2 column layout for the index page)
