For Marketeers who use external tools it would be useful to be able to create a Sell All using a external list and the contents of your hanger. Similar to the Buy All → Export Order it would be useful that on the sell all window you can Import a list that will match the names, quantities and price. So Right click sell all would perform its normal function. When importing a Sell All List it will modify the Sell All window changing quantities and prices to match. If the quantity isn’t available it goes red or just defaults to the max stack size. Very error prone to have to look down a list of 50-100 items in excel and jam them into the Sell All window.
A Sell All window could be blank as well and than take a Imported List and set the order according to the above rules and what’s in your inventory.