There are 4 tasks to perform, each modifying an opencart shop site we have.
1) Breadcrumbs. When on a product page, the breadcrumb only shows "Home" and then the product name, no category in-between (eg. Home » Long Looks Gold Necklace"). I suspect that this is because multiple categories can be selected for one product. I would like a category to show. So, if there are two or more categories you can either a) make it show all linked categories with a "/" devider (eg. "Home » Necklaces / Religious / Childrens » Long Looks Gold Necklace") or b) if "a" is not possible please at least make it show one of the categories (the first on the list alphabetically is fine). This is not as good as solution "a" but is better than nothing.
2) Filters. Also on the front end, We need the customers to be able to filter the products by attributes. For example, Please see this site and duplicate the "Narrow Your Results" feature on the left ([url removed, login to view]). The current shop shows categories on the left, this can be replaced with this new filter feature as the categories are already in the top menu. For this shop, it will allow customers to easilly set a price range, and limit results to products that match their requirements (eg. substance is gold, quality is 9ct). You will notice that on the harvey norman site it only shows / lets you choose from attributes that match with atleast one product in the results. This seems to be processed instantly / quickly (nice).
The remaining two tasks are for changes to the backend:
3) Backend Product Filters. On the backend "Products" page (under "Catalog" menu) please set up an extra series of dropdown filters at the top of this page (inline with "Insert / copy / delete? somewhere up there). 1st Filter will be for Category (select from categories to only display matching products), 2nd and 3rd is for attribute group and attribute (eg select to only show products with a "substance"(group) that is "metal"(attribute)).
4) Dropdowns instead of textboxes for attributes. This is to be done in the attributes part of the product edditing page (under "catalog / product / click edit / click on attribute tab"). When adding an attribute, there should be 3 columns. 1st column, dropdown, Attribute group. 2nd column, dropdown, attribute (listing only attributes from the group selected). 3rd column, text (as it is now is fine).( Also the Links section's "related products" field should also be a dropdown.)