Navigation menu: Collapse/Expand by product line

We are managing dozens of product lines and it will be easier if we can collapse and expand by product line in the navigation menu so that the list is not so long (it currently scrolls off the default drop down so we have to scroll). 

Also, the ability to use type-ahead so that you can type the product name and it will narrow down the results to quickly find the correct product would be a big time saver.

In the Account settings, configure product lines, it would also be helpful to have expand/contract accordion buttons so that it's easy to manage large product family trees.