There are many situations where it would be useful to set up the equivalent of a "shopping list" or "product list" and then let the user enter quantities and add products in bulk to their cart.
For example, a customer buys 7 supplies on a monthly basis. I can create a shopping list table for them that lists supplies A-G. Right now they have to click through each one to add a quantity and add to cart. Each time, a connected record is created.
Ideally, there would be a list of all items and one or more inputs in a table view. At the bottom a batch submit button would iterate through the items and create connected records for each.