I'm trying to figure out how to add categories and subcategories automatically to the dropdown (ie. main nav menu) for the Products tab of the menu in v8 (eg. runbot.odoo.com   master branch).

It would be preferable to have categories and their subcategories going further down the tree view to be available from the top level nav menu under products for example, or as a selected category with it's own subcategories (eg. a seperate menu item for cameras with subcategories with DSLR, SLR, Accessories, etc.). I understand these can be added manually, however something that can propagate new menu items itself when a new subcategory or category is created for example would be a useful feature (much like a number of other shopping cart platforms). I like the flexibility and ease of use of the current menu system, however being able to add this kind of category tree view as a widget or similar in the main menu would be preferable.

In regards to the tree view on the left hand column of the shop/products page. Are there any plans on making this collapsible (eg. with a + or - sign or > next to categories for expanding or contracting them)?

Also mentioned in another thread here:

https://www.odoo.com/forum/Help-1/question/Is-their-a-way-to-link-attributes-with-product-categories-48416

was a feature to filter by attributes available in the current set of products within the category you are in. This is something else that would be extremely useful for those with larger stores with many different types of products that need this kind of granularity when searching/filtering on the frontend.

I understand there are some new themes being worked on here that may or may not allow for the functionality mentioned above:

https://github.com/odoo/design-themes

however I haven't yet been able to successully install them as a module on any of the updates to the master github respository for v8 yet. Any guidance whatsoever on this would be much appreciated.