I have a multiple tiered hierarchy set up for my product lines with sub product lines. When I make changes to multiple products, I use the configure product/product line tool to give me a visual representation of the product hierarchy. If you drill down several layers and make a change to product and press save, it closes all the expanded products to the top level product line. This means you have to re expand all the product lines again to get to the next product in the list.
I will like the ability to toggle a feature on that saves the expanded product list if you are editing multiple products.
The status of this idea was out of date. Since this was requested we have improved the Configure workspaces page in settings. Now the hierarchy will not be collapsed after changes have been made.